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fix markup of controllers guide

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commit 3aa3880cfb86d7330db573a31066fd8ef897f180 1 parent 0ddae9f
@Mik-die Mik-die authored
Showing with 1 addition and 1 deletion.
  1. +1 −1  guides/source/action_controller_overview.md
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2  guides/source/action_controller_overview.md
@@ -232,7 +232,7 @@ The permitted scalar types are `String`, `Symbol`, `NilClass`,
`StringIO`, `IO`, `ActionDispatch::Http::UploadedFile` and
`Rack::Test::UploadedFile`.
-To declare that the value in `params+ must be an array of permitted
+To declare that the value in `params` must be an array of permitted
scalar values map the key to an empty array:
```ruby
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