Deal with "API Chaining" trademark issue

Per request from Josh, this needs to be changed ASAP.
We will find a better name at some point soon.

docs/api/chaining.md

-# API Chaining
+# API CiviChaining
 
 It is now possible to do two API calls at once with the first call feeding into
 the second. E.g. to create a contact with a contribution you can nest the
@@ -8,9 +8,9 @@ it will action the contribution create using the id from the contact create as
 be returned when you do a get.
 
 See [api/v3/examples] within the core source code for a plethora of examples
-(from unit tests) that use API chaining. To start, look at these examples:
+(from unit tests) that use API CiviChaining. To start, look at these examples:
 
--   [APIChainedArray.php]
+-   [APIedArray.php]
 -   [APIChainedArrayFormats.php]
 -   [APIChainedArrayValuesFromSiblingFunction.php]
 

mkdocs.yml

@@ -69,7 +69,7 @@ pages:
   - API Actions: api/actions.md                 # page-tree = DONE
   - API Parameters: api/params.md               # page-tree = DONE
   # API Permissions: api/permissions.md         # page-tree = NEED_NEW_PAGE
-  - API Chaining: api/chaining.md
+  - API CiviChaining: api/chaining.md
   # API Changes: api/changes.md                 # page-tree = NEED_NEW_PAGE
 - Hooks:
   - Using hooks: hooks.md                        # page-tree = NEED_PAGE_MOVE to /hooks/usage.md