quic: fix coverage comment typo

[sjungwon03]

Fix covrerage → coverage in the TODO comments for the QUIC modules.

- // TODO(@jasnell) Temporarily ignoring c8 covrerage for this file while tests
+ // TODO(@jasnell) Temporarily ignoring c8 coverage for this file while tests

The same typo appears in diagnostics.js, quic.js, state.js, stats.js, and symbols.js.

[nodejs-github-bot]

Review requested:

• @nodejs/quic

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.24%. Comparing base (ed63b19) to head (732f5c1).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #64486      +/-   ##
==========================================
- Coverage   92.01%   90.24%   -1.78%     
==========================================
  Files         381      741     +360     
  Lines      170167   241688   +71521     
  Branches    26075    45550   +19475     
==========================================
+ Hits       156585   218119   +61534     
- Misses      13291    15110    +1819     
- Partials      291     8459    +8168     

Files with missing lines	Coverage Δ
lib/internal/quic/diagnostics.js	100.00% <100.00%> (ø)
lib/internal/quic/quic.js	100.00% <100.00%> (ø)
lib/internal/quic/state.js	100.00% <100.00%> (ø)
lib/internal/quic/stats.js	100.00% <100.00%> (ø)
lib/internal/quic/symbols.js	100.00% <100.00%> (ø)

... and 486 files with indirect coverage changes

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