Fix IndieAuth endpoint requiring incorrectly defined query param (#4183)

* fix(api): remove incorrectly required query param. Fixes #4163

* Commit updated API documentation

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Co-authored-by: Owncast <owncast@owncast.online>

openapi.yaml

@@ -3310,7 +3310,6 @@ paths:
       tags: ['Internal', 'Auth', 'Chat']
       parameters:
         - $ref: '#/components/parameters/IndieAuthState'
-        - $ref: '#/components/parameters/IndieAuthCode'
       responses:
         '307':
           description: Redirected to home page
@@ -3328,7 +3327,6 @@ paths:
         - $ref: '#/components/parameters/IndieAuthRedirectURI'
         - $ref: '#/components/parameters/IndieAuthCodeChallenge'
         - $ref: '#/components/parameters/IndieAuthState'
-        - $ref: '#/components/parameters/IndieAuthCode'
       responses:
         '200':
           description: IndieAuth flow concluded
@@ -4430,12 +4428,6 @@ components:
       schema:
         type: string
       required: true
-    IndieAuthCode:
-      in: query
-      name: code
-      schema:
-        type: string
-      required: true
     IndieAuthMe:
       in: query
       name: me