3rd try: docs-content-team tag in issue templates (Qiskit#3139)

Still testing. Will need to open one more PR to implement, after I
figure out what works

Author: abbycross

.github/ISSUE_TEMPLATE/guides.yaml

@@ -1,9 +1,6 @@
 name: (GUIDES AND ADDITIONAL RESOURCES 📜) Report a bug/typo or request new content
 description: Report typos, bugs, out-of-date content, broken links, etc. or make a request for new content
 labels: ["content 📄", "needs triage 🤔"]
-assignees:
-  - docs-content-team
-
 body:
   - type: markdown
     attributes:

.github/ISSUE_TEMPLATE/tutorials.yaml

@@ -4,7 +4,6 @@ labels: ["content 📄", "tutorial 📒", "needs triage 🤔"]
 assignees:
   - miamico
   - nathanearnestnoble
-  - docs-content-team
 
 body:
   - type: markdown
@@ -85,4 +84,4 @@ body:
 
   - type: markdown
     attributes:
-      value: Tagging the [Docs content team](https://github.com/orgs/Qiskit/teams/docs-content-team)
+      value: Tagging @Qiskit/docs-content-team