Bug 1569472 - Remove toolkit/components/telemetry/docs from exclude list of RST linter. r=sylvestre

Depends on D55418

Differential Revision: https://phabricator.services.mozilla.com/D55419

--HG--
extra : moz-landing-system : lando

tools/lint/rst.yml

@@ -2,8 +2,6 @@
 rst:
     description: RST linter
     include: [.]
-    exclude:
-        - toolkit/components/telemetry/docs/
     extensions:
         - rst
     support-files: