build: skip dockit on riscv64

[sxa]

The doc-only target gives a variety of failures on different riscv64 systems. These symptoms are described in nodejs/build#4099 (comment) in the section Additional info on the Wasm doc-only crash

This removes the doc-only target from being run by default as part of make test-ci similar to what has been done for AIX and IBMi.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.67%. Comparing base (8ccbe8e) to head (ffdb03c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62251      +/-   ##
==========================================
- Coverage   89.68%   89.67%   -0.02%     
==========================================
  Files         676      676              
  Lines      206495   206495              
  Branches    39537    39542       +5     
==========================================
- Hits       185204   185175      -29     
- Misses      13435    13444       +9     
- Partials     7856     7876      +20     

see 35 files with indirect coverage changes

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[kxxt]

I think we can fix it (at least the WebAssembly.instantiate(): Out of memory: Cannot allocate Wasm memory for new instance part) by bumping @nodejs/doc-kit after nodejs/doc-kit#691 is merged.

[kxxt]

by bumping @nodejs/doc-kit after nodejs/doc-kit#691 is merged.

#62686