Correct link errors, 404s, and incorrect syntax in Agent documentation (#5319)

* Fixing link errors from Hugo build report

* More link corrections

* Fix malformed relrefs

* Fix more broken links and bad anchors

* Fix a few typos and missed elements

Author: clayton-cornell

docs/sources/flow/concepts/clustering.md

@@ -7,7 +7,7 @@ canonical: https://grafana.com/docs/agent/latest/flow/concepts/clustering/
 labels:
   stage: beta
 menuTitle: Clustering
-title: Grafana Agent clustering concepts
+title: Clustering (beta)
 description: Learn about Grafana Agent clustering concepts
 weight: 500
 ---

docs/sources/flow/concepts/configuration_language.md

@@ -104,4 +104,4 @@ This file has two blocks:
 River is documented in detail in [Configuration language][config-docs] section
 of the Grafana Agent Flow docs.
 
-[config-docs]: {{< relref "../config-language/" >}}
+[config-docs]: {{< relref "../config-language" >}}

docs/sources/flow/config-language/expressions/function_calls.md

@@ -10,7 +10,7 @@ description: Learn about function calls
 weight: 400
 ---
 
-# Function Calls
+# Function calls
 Function calls is one more River feature that lets users build richer
 expressions.
 
@@ -31,4 +31,4 @@ env("HOME")
 json_decode(local.file.cfg.contents)["namespace"]
 ```
 
-[standard library]: {{< relref "../../reference/stdlib/_index.md" >}}
+[standard library]: {{< relref "../../reference/stdlib" >}}

docs/sources/flow/config-language/expressions/types_and_values.md

@@ -45,7 +45,7 @@ the following conventions for referring to types:
   descending units can be combined to add their values together; `"1h30m"` is
   the same as `"90m"`.
 
-[component reference]: {{< relref "../../reference/components/" >}}
+[component reference]: {{< relref "../../reference/components" >}}
 
 ## Numbers
 

docs/sources/flow/config-language/syntax.md

@@ -45,7 +45,7 @@ The following example sets the `log_level` attribute to `"debug"`.
 log_level = "debug"
 ```
 
-The `ATTRIBUTE_NAME` must be a valid River [identifier](#identifier).
+The `ATTRIBUTE_NAME` must be a valid River [identifier](#identifiers).
 
 The `ATTRIBUTE_VALUE` can be either a constant value of a valid River
 [type]({{< relref "./expressions/types_and_values.md" >}}) (eg. string,

docs/sources/flow/getting-started/configure-agent-clustering.md

@@ -10,7 +10,7 @@ description: Learn how to configure Grafana Agent clustering in an existing inst
 weight: 400
 ---
 
-# Configure Grafana Agent clustering
+# Configure Grafana Agent clustering in an existing installation
 
 You can configure Grafana Agent to run with [clustering][] so that
 individual agents can work together for workload distribution and high

docs/sources/flow/getting-started/distribute-prometheus-scrape-load.md

@@ -5,7 +5,7 @@ aliases:
 - /docs/grafana-cloud/monitor-infrastructure/integrations/agent/flow/getting-started/distribute-prometheus-scrape-load/
 canonical: https://grafana.com/docs/agent/latest/flow/getting-started/distribute-prometheus-scrape-load/
 menuTitle: Distribute Prometheus metrics scrape load
-title: Distribute your Prometheus metrics scrape load
+title: Distribute Prometheus metrics scrape load
 description: Learn how to distribute your Prometheus metrics scrape load
 weight: 500
 ---

docs/sources/flow/getting-started/migrating-from-prometheus.md

@@ -4,15 +4,13 @@ aliases:
 - /docs/grafana-cloud/monitor-infrastructure/agent/flow/getting-started/migrating-from-prometheus/
 - /docs/grafana-cloud/monitor-infrastructure/integrations/agent/flow/getting-started/migrating-from-prometheus/
 canonical: https://grafana.com/docs/agent/latest/flow/getting-started/migrating-from-prometheus/
-description: Learn how to migrate your configuration from Prometheus to Grafana Agent
-  flow mode
 menuTitle: Migrate from Prometheus
-title: Migrate from Prometheus to Grafana Agent flow mode
-description: Learn how to migrate from Prometheus to Grafana Agent flow mode
+title: Migrate from Prometheus to Grafana Agent Flow
+description: Learn how to migrate from Prometheus to Grafana Agent Flow
 weight: 320
 ---
 
-# Migrate from Prometheus to Grafana Agent
+# Migrate from Prometheus to Grafana Agent Flow
 
 The built-in Grafana Agent convert command can migrate your [Prometheus][] configuration to a Grafana Agent flow configuration.
 

docs/sources/flow/getting-started/migrating-from-promtail.md

@@ -4,15 +4,13 @@ aliases:
 - /docs/grafana-cloud/monitor-infrastructure/agent/flow/getting-started/migrating-from-promtail/
 - /docs/grafana-cloud/monitor-infrastructure/integrations/agent/flow/getting-started/migrating-from-promtail/
 canonical: https://grafana.com/docs/agent/latest/flow/getting-started/migrating-from-promtail/
-description: Learn how to migrate your configuration from Promtail to Grafana Agent
-  Flow Mode
 menuTitle: Migrate from Promtail
-title: Migrate from Promtail to Grafana Agent Flow mode
-description: Learn how to migrate from Promtail to Grafana Agent Flow mode
+title: Migrate from Promtail to Grafana Agent Flow
+description: Learn how to migrate from Promtail to Grafana Agent Flow
 weight: 330
 ---
 
-# Migrate from Promtail to Grafana Agent
+# Migrate from Promtail to Grafana Agent Flow
 
 The built-in Grafana Agent convert command can migrate your [Promtail][]
 configuration to a Grafana Agent flow configuration.
@@ -22,7 +20,7 @@ This topic describes how to:
 * Convert a Promtail configuration to a Flow Mode configuration.
 * Run a Promtail configuration natively using Grafana Agent Flow Mode.
 
-[Promtail]: https://grafana.com/docs/loki/latest/clients/promtail/
+[Promtail]: /docs/loki/latest/clients/promtail/
 
 ## Components used in this topic
 
@@ -207,6 +205,6 @@ Furthermore, we recommend that you review the following checklist:
 * Note that the Agent exposes the [Grafana Agent Flow UI][], which differs
   from Promtail's Web UI.
 
-[expanded in the config file]: https://grafana.com/docs/loki/latest/clients/promtail/configuration/#use-environment-variables-in-the-configuration
+[expanded in the config file]: /docs/loki/latest/clients/promtail/configuration/#use-environment-variables-in-the-configuration
 
-[Grafana Agent Flow UI]: https://grafana.com/docs/agent/latest/flow/monitoring/debugging/#grafana-agent-flow-ui
+[Grafana Agent Flow UI]: /docs/agent/latest/flow/monitoring/debugging/#grafana-agent-flow-ui

docs/sources/flow/getting-started/opentelemetry-to-lgtm-stack.md

@@ -140,7 +140,7 @@ loki.write "grafana_cloud_loki" {
 }
 ```
 
-[Grafana Loki]: https://grafana.com/oss/loki/
+[Grafana Loki]: /oss/loki/
 
 ## Grafana Tempo