docs: add edge cases to JumpSearch documentation

[prashantpiyush1111]

Added edge cases section to improve JumpSearch documentation clarity.

Changes:

• Added edge cases like empty array, element not found, and single element array
• Improved readability for beginners

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.50%. Comparing base (79bc620) to head (4c7ac35).

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #7379   +/-   ##
=========================================
  Coverage     79.50%   79.50%           
  Complexity     7161     7161           
=========================================
  Files           797      797           
  Lines         23409    23409           
  Branches       4603     4603           
=========================================
  Hits          18611    18611           
  Misses         4054     4054           
  Partials        744      744           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.