docs: fix typo in CRIU --tcp-established option link text

[Bojun-Vvibe]

Repo: opencontainers/runc (⭐ 11000)
Type: docs
Files changed: 2
Lines: +2/-2

What

Fixes a typo in the man pages for runc checkpoint and runc restore. The link text referenced a non-existent CRIU option --tcp-establised (missing an "h"). The URL it pointed to was already correct (--tcp-established), so only the visible link text was wrong.

Why

Consistency between the visible documentation text and the actual CRIU option name avoids confusion for users reading the man pages and trying to look up the corresponding CRIU flag. The runc flag itself is correctly spelled as --tcp-established immediately above the link.

Testing

• git diff --stat confirms only the two doc files are modified (2 insertions / 2 deletions).
• grep -rn "establised" --exclude-dir=vendor returns no matches after the change.
• Markdown rendering is unaffected — only the link's visible label changed.

Risk

Low — documentation-only typo fix, no functional changes, no code paths touched.