Merge "Correct oauth create_request_token documentation"

api-ref/source/v3-ext/oauth.inc

@@ -226,7 +226,7 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
-    - requested_project_id: requested_project_id
+    - Requested-Project-Id: requested_project_id
 
 Response Example
 ----------------

api-ref/source/v3-ext/parameters.yaml

@@ -1,4 +1,10 @@
 # variables in header
+requested_project_id:
+  description: |
+    The ID of the requested project.
+  in: header
+  required: true
+  type: string
 
 # variables in path
 access_token_id_path:
@@ -321,12 +327,6 @@ remaining_uses:
   in: body
   required: false
   type: boolean
-requested_project_id:
-  description: |
-    The ID of the requested project.
-  in: body
-  required: true
-  type: string
 revoke_audit_chain_id:
   description: |
     Specifies a group of tokens based upon the ``audit_id`` of the