Add link to french docs for prefer-t-regex.md and test-title-format.md

Author: forresst

docs/rules/prefer-t-regex.md

@@ -1,5 +1,7 @@
 # Prefer using `t.regex()` to test regular expressions
 
+Translations: [Français](https://github.com/avajs/ava-docs/blob/master/fr_FR/related/eslint-plugin-ava/docs/rules/prefer-t-regex.md)
+
 The AVA [`t.regex()` assertion](https://github.com/avajs/ava/blob/master/docs/03-assertions.md#regexcontents-regex-message) can test a string against a regular expression.
 
 This rule will enforce the use of `t.regex()` instead of manually using `RegExp#test()`, which will make your code look clearer and produce better failure output.

docs/rules/test-title-format.md

@@ -1,5 +1,7 @@
 # Ensure test titles have a certain format
 
+Translations: [Français](https://github.com/avajs/ava-docs/blob/master/fr_FR/related/eslint-plugin-ava/docs/rules/test-title-format.md)
+
 This rule is useful when you want to make sure all test titles match a common pattern to increase readability when tests fail.
 
 For example, titles like `'Should throw when invalid.'`, `'Should fail when called.'` or `'Should pass when using any number.'` could be enforced with the following pattern `'^Should (pass|fail|throw) when [\\w ]+\\.$'` (Note the escaped `\`).