docs: fix typos and update https references (#8154)

Co-authored-by: Tim Lai <timothy.lai@smartbear.com>

docs/customization/overview.md

@@ -7,7 +7,7 @@ Swagger UI leans heavily on concepts and patterns found in React and Redux.
 If you aren't already familiar, here's some suggested reading:
 
 - [React: Quick Start (reactjs.org)](https://reactjs.org/docs/hello-world.html)
-- [Redux README (redux.js.org)](http://redux.js.org/)
+- [Redux README (redux.js.org)](https://redux.js.org/)
 
 In the following documentation, we won't take the time to define the fundamentals covered in the resources above.
 

docs/customization/plugin-api.md

@@ -100,7 +100,7 @@ The Action interface enables the creation of new Redux action creators within a
 
 This action creator function will be exposed to container components as `exampleActions.updateFavoriteColor`. When this action creator is called, the return value (which should be a [Flux Standard Action](https://github.com/acdlite/flux-standard-action)) will be passed to the `example` reducer, which we'll define in the next section.
 
-For more information about the concept of actions in Redux, see the [Redux Actions documentation](http://redux.js.org/docs/basics/Actions.html).
+For more information about the concept of actions in Redux, see the [Redux Actions documentation](https://redux.js.org/tutorials/fundamentals/part-2-concepts-data-flow#actions).
 
 #### Reducers
 

docs/usage/configuration.md

@@ -369,7 +369,7 @@ Example:
 
 ```sh
 SUPPORTED_SUBMIT_METHODS="[\"get\", \"post\"]"
-URLS="[ { url: \"http://petstore.swagger.io/v2/swagger.json\", name: \"Petstore\" } ]"
+URLS="[ { url: \"https://petstore.swagger.io/v2/swagger.json\", name: \"Petstore\" } ]"
 ```
 
 ##### Object variables
@@ -387,5 +387,5 @@ SPEC="{ \"openapi\": \"3.0.0\" }"
 #### .env file example encoding
 ```sh
 SUPPORTED_SUBMIT_METHODS=['get', 'post']
-URLS=[ { url: 'http://petstore.swagger.io/v2/swagger.json', name: 'Petstore' } ]
+URLS=[ { url: 'https://petstore.swagger.io/v2/swagger.json', name: 'Petstore' } ]
 ```

docs/usage/cors.md

@@ -41,11 +41,11 @@ XMLHttpRequest cannot load http://sad.server.com/v2/api-docs. No 'Access-Control
 
 Swagger UI cannot easily show this error state.
 
-- Use the http://www.test-cors.org website to verify CORS support. Keep in mind this will show a successful result even if `Access-Control-Allow-Headers` is not available, which is still required for Swagger UI to function properly.
+- Use the https://www.test-cors.org website to verify CORS support. Keep in mind this will show a successful result even if `Access-Control-Allow-Headers` is not available, which is still required for Swagger UI to function properly.
 
 ### Enabling CORS
 
-The method of enabling CORS depends on the server and/or framework you use to host your application. http://enable-cors.org provides information on how to enable CORS in some common web servers.
+The method of enabling CORS depends on the server and/or framework you use to host your application. https://enable-cors.org provides information on how to enable CORS in some common web servers.
 
 Other servers/frameworks may provide you information on how to enable it specifically in their use case.
 

docs/usage/version-detection.md

@@ -48,7 +48,7 @@ If you've determined this is the version you have, to find the exact version:
 /**
  * swagger-ui - Swagger UI is a dependency-free collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API
  * @version v2.2.9
- * @link http://swagger.io
+ * @link https://swagger.io
  * @license Apache-2.0
  */
  ```