message: docs: fix typo in deprecation faq
  Fix grammar error in FAQ of deprecation.
  Risk Level: Low
  Docs Changes: typo
diff: @@ -11,5 +11,5 @@ annotated in the API proto itself and explained in detail in the
  For the first 3 months following deprecation, use of deprecated fields will result in a logged
  warning and incrementing the :ref:`deprecated_feature_use <runtime_stats>` counter.
  After that point, the field will be annotated as fatal-by-default and further use of the field
  -will will be treated as invalid configuration unless
  +will be treated as invalid configuration unless
  :ref:`runtime overrides <config_runtime_deprecation>` are employed to re-enable use.
  