docs: trim repeated boilerplate in git, gitea, and bin skills

Finding 13: five blocks of near-identical wording were repeated across
skills within a plugin — the gitea "resolve owner and repo" step (5
skills), the 404-masks-403 note (6 files), the manual pagination
explanation (8 files), the git plugin's main/master force-push refusal
(7 files, some with multiple internal restatements), and the bin
skills' domain-glossary/ADR paragraph (5 skills). Tightened each
instance in place — same meaning, fewer words — rather than extracting
to a shared file, which ADR-0014's one-file-per-skill install
constraint rules out. Left the three git skills' structured-result
JSON shapes alone (coupled to the separate, out-of-scope git-orchestrate
merge candidate, finding 19).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YR2CjVumUbEGWcMikcoXBD

plugins/gitea/skills/gitea-prs/SKILL.md

@@ -19,7 +19,7 @@ metadata:
     - gitea-mcp-slim-go
     - context7-websites-gitea
     - context7-gitea-tea-cli
-  version: "0.1.3"
+  version: "0.1.4"
 
 allowed-tools: Bash mcp__gitea__list_pull_requests mcp__gitea__pull_request_read mcp__gitea__pull_request_write mcp__gitea__pull_request_review_write
 ---
@@ -31,13 +31,13 @@ allowed-tools: Bash mcp__gitea__list_pull_requests mcp__gitea__pull_request_read
 
 ## Step 1 — Resolve owner and repo
 
-Extract them from the git remote before any tool call, skipping this when an orchestrating caller already passed them in:
+Extract from the git remote before any tool call, skipping this when an orchestrating caller already passed them in:
 
 ```bash
 rtk git remote get-url origin
 ```
 
-If origin is not set or the URL is not a Gitea URL, stop and report: "No Gitea remote found — set origin to your Gitea instance URL."
+No origin, or not a Gitea URL: stop and report "No Gitea remote found — set origin to your Gitea instance URL."
 
 ## Step 2 — Dispatch