Fix link to issue 751 and add link to french translation (#946)

docs/common-pitfalls.md

@@ -1,8 +1,10 @@
 # Common Pitfalls
 
+Translations: [Français](https://github.com/avajs/ava-docs/blob/master/fr_FR/docs/common-pitfalls.md)
+
 ## AVA in Docker
 
-If you run AVA in Docker as part of your CI, you need to fix the appropriate environment variables. Specifically, adding `-e CI=true` in the `docker exec` command. See [https://github.com/avajs/ava/issues/751](#751).
+If you run AVA in Docker as part of your CI, you need to fix the appropriate environment variables. Specifically, adding `-e CI=true` in the `docker exec` command. See [#751](https://github.com/avajs/ava/issues/751).
 
 AVA uses [is-ci](https://github.com/watson/is-ci) to decide if it's in a CI environment or not using [these variables](https://github.com/watson/is-ci/blob/master/index.js).