[sancharinipanda]

Replaces #962, whose commit message failed the commit message check. The file changes are identical.

What has changed?

Small metadata update to the regression testing glossary page (version 4.0.0):

• Title shortened to 'Regression Testing'
• Description rewritten around how Keploy automates regression testing (capture and replay, CI, code coverage), using claims already on the page
• Keywords narrowed (was only 'API')
• Added one sentence linking to the full blog guide and the regression testing product page

Reason: Google ignores the existing canonical. URL Inspection shows the user-declared canonical is the blog guide, but the Google-selected canonical is this page. In Search Console (last 28 days, US, data to 10 Nov):

• This page: 3,009 impressions, 3 clicks, average position 28.6. Blog guide: 3,383 impressions, 7 clicks, position 20.6.
• Since 26 Oct this page gets more daily impressions than the blog guide (last 7 days: 972 vs 501).
• For 'regression testing', the blog guide ranks at 13.5 and this page at 36.9. When Google shows this page instead, our result drops by about 23 positions.
• Definition queries go only to this page: 'what is regression testing' (47 impressions, position 28.8), 'what is regression testing in software testing' (49, 18.3), 'regression test' (68, 37.7). The blog guide gets 0 impressions for them.

The body content, URL, id, sidebar label and canonical are unchanged.

Type of change

• Documentation update (if none of the other choices apply).

How Has This Been Tested?

Front matter and one added paragraph in a single Markdown file. No code, component or sidebar changes.

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.