Typo Update README.md

[evg1nn0eth]

Title: Typo update in README.md

Description:

This pull request addresses a couple of minor grammatical issues in the README.md file:

1. Fixed the phrase "When ran" to "When run" to correct the grammatical issue.
2. Improved sentence clarity by changing "look watch" to simply "watch" to make the sentence flow better.

Changes:

• Corrected the phrase "When ran" to "When run" in the fuzz testing explanation.
• Adjusted "look watch" to "watch" to improve readability and sentence flow.

Checklist before merging:

• If this PR has some consensus-breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes.
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies: [link to the documentation PR]
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies: [link to the services PR]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.59%. Comparing base (5bf522f) to head (570b015).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4090   +/-   ##
=======================================
  Coverage   74.58%   74.59%           
=======================================
  Files         341      341           
  Lines      107484   107484           
=======================================
+ Hits        80166    80174    +8     
+ Misses      27318    27310    -8     

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