[FAQ][Medium] flexible-to-custom-license.md: call-to-action links are empty hrefs

[lyzhang0113]

File: _articles/faq/flexible-to-custom-license.md
Severity: Medium

Found via a full FAQ accuracy audit for dead/broken links.

Claim: "Please submit your request via this form or directly contact us."

Contradicting evidence: Both href attributes are empty strings (verified via grep) — both calls-to-action are non-functional.

Proposed fix: Fill in the actual quote-request form URL and contact URL (e.g. the one used in does-per-server-allow-unlimited.md: https://www.dynamsoft.com/web-twain/ask-for-quote/).

[lyzhang0113]

Confirmed. Use this link:
https://www.dynamsoft.com/store/dynamic-web-twain/#request-for-a-quote