[frontend] Fixed remaining links from old /dashboard/data/connectors address to new /dashboard/data/ingestion/connectors

[JeremyCloarec]

Proposed changes

Some links to the old /dashboard/data/connectors endpoint were remaining. I changed it to the new /dashboard/data/ingestion/connectors address

Related issues

• Clicking on a connector on the Data / Import page opens a blank page #5868

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e1ab71c) 64.72% compared to head (c72bb0f) 64.73%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5869   +/-   ##
=======================================
  Coverage   64.72%   64.73%           
=======================================
  Files         528      528           
  Lines       61991    61991           
  Branches     4947     4949    +2     
=======================================
+ Hits        40126    40131    +5     
+ Misses      21865    21860    -5     

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