message: Fix docs typo.
diff: @@ -152,7 +152,7 @@ The beta version of TechDocs (v0.x.y) made a breaking change to the way TechDocs
  content was accessed and stored, allowing pages to be accessed with
  case-insensitive entity triplet paths (e.g. `/docs/namespace/kind/name` whereas
  in prior versions, they could only be accessed at `/docs/namespace/Kind/name`).
  -In order to enable this change, documentation has be stored in an external
  +In order to enable this change, documentation has to be stored in an external
  storage provider using an object key whose entity triplet is lower-cased.
  New installations of TechDocs since the beta version will work fine with no
  