chore(github): add docs to checklist in pr template
@@ -49,3 +49,5 @@ Please answer the following questions with yes/no.
- Did you notify the maintainers and provide attribution?
2. Is this a breaking change?
+
+3. Has documentation corresponding to this change been updated in the [osm-docs](https://github.com/openservicemesh/osm-docs) repo (if applicable)?
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