chore: [FC-86] Correct catalog directory name (Cyrillic → Latin c)

[PKulkoRaccoonGang]

Description

The catalog directory name used a Cyrillic "с" instead of a Latin "c".
This could cause issues with imports, path resolution, or cross-platform compatibility.

Initial setup

1. Clone and install the tutor-mfe plugin from the draft PR that adds support for Catalog MFE.
2. Go to http://apps.local.openedx.io:1998/catalog/

How Has This Been Tested?

1. Go to Course Catalog page (http://apps.local.openedx.io:1998/catalog/courses).
2. Ensure the course list renders without problems.

[openedx-webhooks]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.41%. Comparing base (7dc9cc3) to head (0df9456).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #23   +/-   ##
=======================================
  Coverage   96.41%   96.41%           
=======================================
  Files          36       36           
  Lines         251      251           
  Branches       31       33    +2     
=======================================
  Hits          242      242           
  Misses          9        9           

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