fix: update docs and fix multiple Robot test failures

- scheduler.py: fix get_anime_service import, success as string
- download.robot: fix queue endpoint path, retry needs list
- logging.robot: fix JSON path access for config
- nfo.robot: accept 400 when TMDB not configured
- anime_settings.robot: Execute JavaScript -> Evaluate JavaScript

tests/robot/resources/api_keywords.resource

@@ -235,9 +235,9 @@ Get Nfo Diagnostics
     RETURN    ${resp}
 
 Repair Nfo
-    [Arguments]    ${key}
+    [Arguments]    ${key}    ${expected_status}=200
     [Documentation]    POST /api/nfo/{key}/repair.
-    ${resp}=    POST API    /api/nfo/${key}/repair
+    ${resp}=    POST API    /api/nfo/${key}/repair    expected_status=${expected_status}
     RETURN    ${resp}
 
 Get Needs Repair