[typo](docs, i18n, versioned_docs) fix the sql-function small case typo

[ChenMiaoi]

Versions

• [x] dev
• [x] 3.0
• [x] 2.1
• [x] 2.0

Languages

• [x] Chinese
• [x] English

Docs Checklist

• [ ] Checked by AI
• [ ] Test Cases Built

---

Contents involved:

TARGET_DIRS=(
    "$REPO_ROOT/versioned_docs"/*/sql-manual/sql-functions
    "$REPO_ROOT/docs/sql-manual/sql-functions"
    "$REPO_ROOT/i18n/zh-CN/docusaurus-plugin-content-docs"/*/sql-manual/sql-functions
)

Material changes:

matches = re.finditer(r'"title":\s*"([^"]*)"', content)
def upper_title(match):
    return f'"title": "{match.group(1).upper()}"'
new_content = re.sub(r'"title":\s*"([^"]*)"', upper_title, content)