docs: Correct endpoint Url for creation of Ticket Discount Code in Docs.

[prateekj117]

Fixes #6260

Checklist

• I have read the Contribution & Best practices Guide and my PR follows them.
• My branch is up-to-date with the Upstream development branch.
• The unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

• All the functions created/modified in this PR contain relevant docstrings.

[codecov]

Codecov Report

Merging #6261 into development will decrease coverage by 0.08%.
The diff coverage is n/a.

@@              Coverage Diff               @@
##           development   #6261      +/-   ##
==============================================
- Coverage        65.69%   65.6%   -0.09%     
==============================================
  Files              286     286              
  Lines            14559   14559              
==============================================
- Hits              9565    9552      -13     
- Misses            4994    5007      +13

Impacted Files	Coverage Δ
app/api/helpers/scheduled_jobs.py	21.42% <0%> (-9.53%)	⬇️
app/api/helpers/query.py	44% <0%> (-4%)	⬇️

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[kushthedude]

Please change the prefix to docs:

[prateekj117]

@iamareebjamal Please review.