Update make docs procedure (#5383)

To test the changes, run the following and browse to URL output by the
script:

```console
git fetch
git checkout origin/update-make-docs
cd docs
make docs
```

---------

Co-authored-by: grafanabot <[email protected]>
Co-authored-by: Jack Baldry <[email protected]>

docs/make-docs

@@ -6,14 +6,20 @@
 # [Semantic versioning](https://semver.org/) is used to help the reader identify the significance of changes.
 # Changes are relevant to this script and the support docs.mk GNU Make interface.
 #
+# ## 8.2.0 (2024-12-22)
+#
+# ### Removed
+#
+# - Special cases for Oracle and Datadog plugins now that they exist in the plugins monorepo.
+#
 # ## 8.1.0 (2024-08-22)
 #
 # ### Added
 #
 # - Additional website mounts for projects that use the website repository.
 #
 #   Mounts are required for `make docs` to work in the website repository or with the website project.
-#   The Makefile is also mounted for convenient development of the procedure that repository.
+#   The Makefile is also mounted for convenient development of the procedure in that repository.
 #
 # ## 8.0.1 (2024-07-01)
 #
@@ -355,8 +361,6 @@ SOURCES_grafana_cloud_frontend_observability_faro_web_sdk='faro-web-sdk'
 SOURCES_helm_charts_mimir_distributed='mimir'
 SOURCES_helm_charts_tempo_distributed='tempo'
 SOURCES_opentelemetry='opentelemetry-docs'
-SOURCES_plugins_grafana_datadog_datasource='datadog-datasource'
-SOURCES_plugins_grafana_oracle_datasource='oracle-datasource'
 SOURCES_resources='website'
 
 VERSIONS_as_code='UNVERSIONED'
@@ -367,8 +371,6 @@ VERSIONS_grafana_cloud_k6='UNVERSIONED'
 VERSIONS_grafana_cloud_data_configuration_integrations='UNVERSIONED'
 VERSIONS_grafana_cloud_frontend_observability_faro_web_sdk='UNVERSIONED'
 VERSIONS_opentelemetry='UNVERSIONED'
-VERSIONS_plugins_grafana_datadog_datasource='latest'
-VERSIONS_plugins_grafana_oracle_datasource='latest'
 VERSIONS_resources='UNVERSIONED'
 VERSIONS_technical_documentation='UNVERSIONED'
 VERSIONS_website='UNVERSIONED'
@@ -378,8 +380,6 @@ PATHS_grafana_cloud='content/docs/grafana-cloud'
 PATHS_helm_charts_mimir_distributed='docs/sources/helm-charts/mimir-distributed'
 PATHS_helm_charts_tempo_distributed='docs/sources/helm-charts/tempo-distributed'
 PATHS_mimir='docs/sources/mimir'
-PATHS_plugins_grafana_datadog_datasource='docs/sources'
-PATHS_plugins_grafana_oracle_datasource='docs/sources'
 PATHS_resources='content'
 PATHS_tempo='docs/sources/tempo'
 PATHS_website='content'