Fix some comments about creating labels (frequenz-floss#53)

Author: llucax

cookiecutter/{{cookiecutter.github_repo_name}}/.github/ISSUE_TEMPLATE/bug.yml

@@ -51,8 +51,8 @@ body:
         - Unit, integration and performance tests (part:tests)
         - Build script, CI, dependencies, etc. (part:tooling)
         # TODO(cookiecutter): Add other parts
-        # Please have in mind that that the part:xxx should be created as
-        # a issue label in the GitHub repository"
+        # Please have in mind that that the part:xxx labels need to
+        # be created in the GitHub repository.
     validations:
       required: true
   - type: textarea

cookiecutter/{{cookiecutter.github_repo_name}}/.github/keylabeler.yml

@@ -17,5 +17,5 @@ labelMappings:
   "part:tooling": "part:tooling"
   "part:❓": "part:❓"
   # TODO(cookiecutter): Add other parts
-  # Please have in mind that that the part:xxx should be created as a issue
-  # label in the GitHub repository"
+  # Please have in mind that that the part:xxx labels need to
+  # be created in the GitHub repository.

cookiecutter/{{cookiecutter.github_repo_name}}/.github/labeler.yml

@@ -15,8 +15,8 @@
 # "part:other":
 #   - "src/frequenz/{{cookiecutter.type}}/{{cookiecutter.name}}/other/**"
 #
-# Please have in mind that that the part:xxx should be created as a issue label
-# in the GitHub repository"
+# Please have in mind that that the part:xxx labels need to
+# be created in the GitHub repository.
 
 "part:docs":
   - "**/*.md"