Add comment to CoC document warning about local modifications (#283)

Author: freakboy3742

.github/workflows/coc-update.yml

@@ -62,12 +62,6 @@ jobs:
             exit 0
         fi
 
-        # Safety catch for initial testing.
-        if [[ "${{ matrix.full_repo }}" != "beeware/colosseum" ]]; then
-            echo "Initial safety catch... skipping non-colosseum..."
-            exit 0
-        fi
-
         # Work within target repo
         cd targetrepo
 

CODE_OF_CONDUCT.md

@@ -1,3 +1,12 @@
+<!--
+  **********************************************************************
+  ***                DO NOT MODIFY THIS FILE DIRECTLY                ***
+  **********************************************************************
+   The original copy of this file is in the beeware/.github repository.
+   It will be automatically copied into other BeeWare repositories when
+   the original is altered. Any changes should be made to the original.
+  **********************************************************************
+-->
 # BeeWare Community Code of Conduct
 
 ## Our pledge <a name="our-pledge"></a>