fix(fa): Persian typos, dead links, a dropped pull quote and bidi punctuation

[Parhamfakhar1]

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This cleans up defects in the Persian articles that are visible on the published
pages (https://opensource.guide/fa/...). Nothing here rewrites translation prose:
the changes are spelling, punctuation, markup, and link targets.

Content bugs

• _articles/fa/starting-a-project.md — the heading "از نام‌گذاری‌های دارای منافات
  خودداری کنید" and two body uses contain "منافات", which is no Persian word. The
  English reads "Avoiding name conflicts" / "trademark conflicts", so this uses
  "تعارض". The matching in-page anchor in _articles/fa/legal.md is updated in the
  same commit, because the anchor is derived from that heading's text.
• _articles/fa/building-community.md — "نگاهدارنده" → "نگهدارنده" (maintainer).
• _articles/fa/maintaining-balance-for-open-source-maintainers.md — a list item
  began with an extra * , so kramdown emitted an empty nested <ul><li> (can be
  seen in the live page source at "به جامعه تکیه کنید").
• _articles/fa/how-to-contribute.md — the Kennedy <aside class="pquote"> block
  (avatar + styled quote + link to the source) was dropped, leaving 7 pull quotes
  where every other language has 8. Restored; the quote text reuses the wording the
  Persian lead-in already uses, and the credit/URL is copied from English.
• Duplicated words: "در در ارتباط" (getting-paid.md), "این این مورد"
  (how-to-contribute.md).

Typography

• 4 lines ended with a duplicated full stop — one of them the description: of
  finding-users.md, which is emitted as the page's meta description.
• One missing space after a period (metrics.md), one en-dash glued to the
  preceding word inside RTL text (breaks bidi ordering), one Arabic-ya spelling
  ("املائی" → "املایی"), one missing half-space ("شاخه شاخه" → "شاخه‌شاخه").
• Double spaces between Persian words and zero-width joiners stranded at the start
  of a word (they render as a phantom gap) removed across the fa articles.

Links (only the URL changed, per docs/translations.md)

These targets exist only in the Persian copy; each now matches the URL the English
article already uses:

was	now	why
http://citizencodeofconduct.org/	Wayback snapshot used by English	domain no longer resolves (curl → 000)
https://runcommand.io/2016-06-26/my-condolences-…	Wayback snapshot of danielbachhuber.com	runcommand.io now redirects to an unrelated squatted domain
https://opensource.org/osd-annotated	https://opensource.org/definition-annotated/	stale path
https://eclipse.org/org/	https://www.eclipse.org/org/	stale host

node test/prose → no issues. In-page anchors across _articles/fa/*.md all
resolve (checked against the ids the live build generates).

Two follow-ups I did not include, to keep this reviewable: 50 hyperlinks present in
the English articles have no equivalent in the Persian ones (legal.md alone accounts
for 17, mostly because several English paragraphs were merged together in translation),
and accessibility-best-practices-for-your-project.md has no Persian version yet —
#3753 adds it as its own PR. The SAST list-marker fix is a separate, English-only PR: #3754.