Tracking Issue for Broken Links found via `lychee`

These errors were found using `lychee` and the output of lychee was filtered manually to double check broken link.

Command used:
```bash
user@fedora:~/stdlib$ lychee --exclude-path node_modules ./
```

- [ ] [./docs/contributing/rotating_github_tokens.md]:
[404] https://github.com/stdlib-js/stdlib/settings/secrets/actions (at 42:10) | Rejected status code: 404 Not Found
[404] https://github.com/stdlib-js/todo/settings/secrets/actions (at 45:10) | Rejected status code: 404 Not Found
[404] https://github.com/stdlib-js/www-status/settings/secrets/actions (at 44:10) | Rejected status code: 404 Not Found
[404] https://github.com/stdlib-js/www-test-code-coverage/settings/secrets/actions (at 43:10) | Rejected status code: 404 Not Found

- [ ] [./docs/editors/vscode/README.md]:
[404] https://github.com/Jason-Rev/vscode-spell-checker/blob/master/client/README.md (at 70:97) | Rejected status code: 404 Not Found | Followed 2 redirects. Redirects: https://github.com/Jason-Rev/vscode-spell-checker/blob/master/client/README.md --[301]--> https://github.com/streetsidesoftware/vscode-spell-checker/blob/master/client/README.md --[302]--> https://github.com/streetsidesoftware/vscode-spell-checker/blob/main/client/README.md

- [ ] [./docs/style-guides/cpp/README.md]:
[ERROR] http://www.edparrish.net/common/cppdoc.html (at 11:5) | Connection closed before response completed

- [ ] [./docs/style-guides/javascript/README.md]:
[TIMEOUT] https://web.archive.org/web/20150701000000/http://sideeffect.kr/popularconvention/#javascript (at 3604:5) | Request timed out
[404] https://www.joyent.com/developers/node/design/errors (at 2281:144) | Rejected status code: 404 Not Found

- [ ] [./docs/policies/domains.md]:
[TIMEOUT] https://www.stdlib.blog/ (at 18:5) | Request timed out
[TIMEOUT] https://www.stdlibjs.blog/ (at 43:5) | Request timed out

- [ ] [./docs/style-guides/julia/README.md]:
[404] http://docs.julialang.org/en/release-0.4/manual/style-guide/ (at 7:11) | Rejected status code: 404 Not Found | Followed 1 redirect. Redirects: http://docs.julialang.org/en/release-0.4/manual/style-guide/ --[301]--> https://docs.julialang.org/en/release-0.4/manual/style-guide/

- [ ] [./docs/style-guides/javascript/README.md]:
[TIMEOUT] https://web.archive.org/web/20150701000000/http://sideeffect.kr/popularconvention/#javascript (at 3604:5) | Request timed out
[404] https://www.joyent.com/developers/node/design/errors (at 2281:144) | Rejected status code: 404 Not Found

- [ ] [./docs/style-guides/julia/README.md]:
[404] http://docs.julialang.org/en/release-0.4/manual/style-guide/ (at 7:11) | Rejected status code: 404 Not Found | Followed 1 redirect. Redirects: http://docs.julialang.org/en/release-0.4/manual/style-guide/ --[301]--> https://docs.julialang.org/en/release-0.4/manual/style-guide/

- [ ] [./docs/style-guides/r/README.md]:
[404] http://r-pkgs.had.co.nz/style.html (at 9:14) | Rejected status code: 404 Not Found | Followed 1 redirect. Redirects: http://r-pkgs.had.co.nz/style.html --[301]--> https://r-pkgs.org/style.html

- [ ] [./docs/talks.md]:
[403] https://skillsmatter.com/skillscasts/10362-node-js-add-ons-for-high-performance-numeric-computing (at 166:77) | Rejected status code: 403 Forbidden
[403] https://skillsmatter.com/skillscasts/10363-webassembly-and-the-future-of-the-web (at 177:60) | Rejected status code: 403 Forbidden
[403] https://skillsmatter.com/skillscasts/10364-math-machine-learning-and-javascript (at 155:61) | Rejected status code: 403 Forbidden

- [ ] [./etc/python/README.md]:
[ERROR] http://python.com/ (at 3:3) | TLS handshake failed. Check SSL/TLS configuration | Followed 2 redirects. Redirects: http://python.com/ --[301]--> https://python.com/ --[302]--> https://sawsells.com/domain/python.com

- [ ] [./FAQ.md]:
[404] http://docs.julialang.org/en/stable/stdlib/numbers/?highlight=bigfloat#Base.BigFloat (at 355:97) | Rejected status code: 404 Not Found
[404] http://docs.julialang.org/en/stable/stdlib/numbers/?highlight=bigfloat#Base.BigInt (at 355:42) | Rejected status code: 404 Not Found
[404] https://gyp.gsrc.io/ (at 203:128) | Rejected status code: 404 Not Found
[404] https://gyp.gsrc.io/ (at 203:306) | Rejected status code: 404 Not Found
[404] https://gyp.gsrc.io/ (at 203:482) | Rejected status code: 404 Not Found
[404] https://gyp.gsrc.io/ (at 203:761) | Rejected status code: 404 Not Found
[403] https://www.khronos.org/opengl/wiki/Compute_Shader (at 361:547) | Rejected status code: 403 Forbidden | Followed 1 redirect. Redirects: https://www.khronos.org/opengl/wiki/Compute_Shader --[301]--> https://wikis.khronos.org/opengl/Compute_Shader
[404] https://www.scipy.org/scipylib/index.html (at 160:156) | Rejected status code: 404 Not Found | Followed 1 redirect. Redirects: https://www.scipy.org/scipylib/index.html --[301]--> https://scipy.org/scipylib/index.html

Start by running the listed lychee command and reviewing the affected files: docs/contributing/rotating_github_tokens.md, the style-guide READMEs, docs/talks.md, etc/python/README.md, and FAQ.md. Check each reported URL manually, then update or remove links that are genuinely obsolete; done means the confirmed broken links are resolved or explicitly accounted for.

Scritto dal modello di indicizzazione a partire dal testo della issue.