[FX] Edits after comprehensive pass over docs

[jamesr66a]

Stack from ghstack:

• [FX] Edits after comprehensive pass over docs #51705 [FX] Edits after comprehensive pass over docs

Pull Request resolved: #51679

Differential Revision: D26246231

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💊 CI failures summary and remediations

As of commit 6e35bad (more details on the Dr. CI page):

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• 2/2 failures possibly* introduced in this PR
  • 1/2 non-CircleCI failure(s)

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🕵️ 1 new failure recognized by patterns

The following CI failures do not appear to be due to upstream breakages:

pytorch_python_doc_build (1/1)

Step: "Doc Build and Push" (full log | diagnosis details | 🔁 rerun)

Feb 04 09:39:24 Makefile:38: recipe for target 'html' failed

Feb 04 09:39:23 
Feb 04 09:39:23 copying static files... ... done
Feb 04 09:39:23 copying extra files... done
Feb 04 09:39:23 dumping search index in English (code: en)... done
Feb 04 09:39:23 dumping object inventory... done
Feb 04 09:39:23 build finished with problems, 1 warning.
Feb 04 09:39:23 /var/lib/jenkins/workspace/docs/src/pytorch-sphinx-theme/pytorch_sphinx_theme/search.html:21: RemovedInSphinx30Warning: To modify script_files in the theme is deprecated. Please insert a <script> tag directly in your theme instead.
Feb 04 09:39:23   <p class="last">
Feb 04 09:39:23 /var/lib/jenkins/workspace/docs/src/pytorch-sphinx-theme/pytorch_sphinx_theme/search.html:24: RemovedInSphinx30Warning: To modify script_files in the theme is deprecated. Please insert a <script> tag directly in your theme instead.
Feb 04 09:39:23   </p>
Feb 04 09:39:24 Makefile:38: recipe for target 'html' failed
Feb 04 09:39:24 make: *** [html] Error 1
Feb 04 09:39:24 ++ code=2
Feb 04 09:39:24 ++ '[' 2 -ne 0 ']'
Feb 04 09:39:24 ++ set +x
Feb 04 09:39:24 =========================
Feb 04 09:39:24 /var/lib/jenkins/workspace/docs/source/fx.rst:66: WARNING: undefined label: graph (if the link has no caption the label must precede a section header)
Feb 04 09:39:24 =========================
Feb 04 09:39:24 Docs build failed. If the failure is not clear, scan back in the log
Feb 04 09:39:24 for any WARNINGS or for the line build finished with problems
Feb 04 09:39:24 (tried to echo the WARNINGS above the ==== line)

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@jamesr66a merged this pull request in c22bc48.

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This pull request has been reverted by 6c80fd0.