fix: escape special chars when rendering Wasm module

[bartlomieju]

Closes #975

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.75%. Comparing base (0c7f83e) to head (4e230bf).
Report is 177 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #978      +/-   ##
==========================================
+ Coverage   81.43%   81.75%   +0.31%     
==========================================
  Files          97       98       +1     
  Lines       23877    25672    +1795     
==========================================
+ Hits        19445    20988    +1543     
- Misses       4432     4684     +252     

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[dsherret]

LGTM, with one comment.