fix: change url of the github-action.json (#1014)

Change path of the github-action.json

Document is moved to a new URL https://www.schemastore.org/github-action.json

Author: dsotirakis

.github/workflows/lint-shared-workflows.yaml

@@ -107,7 +107,7 @@ jobs:
             --time-cond github-action.json \
             --etag-save github-action.json-etag \
             --etag-compare github-action.json-etag \
-            https://json.schemastore.org/github-action.json);
+            https://www.schemastore.org/github-action.json);
 
           curl_exit_code="${?}";