docs: fix malformed since annotations

[Nicholas (Neekoras)]

Seven since: annotations in docs/src do not follow the vX.Y convention: one has a stray dot (v.1.30) and six are missing the v prefix. They are the only seven of 3,333 that do not match ^v\d+\.\d+$.

docs/src/api/class-cdpsession.md:144        * since: v.1.30
docs/src/api/class-cdpsessionevent.md:15    * since: 1.30
docs/src/api/class-apirequest.md:16         * since: 1.46
docs/src/api/class-browser.md:265           * since: 1.46
docs/src/api/class-browser.md:296           * since: 1.46
docs/src/api/class-browsertype.md:376       * since: 1.46
docs/src/test-api/class-testoptions.md:143  * since: 1.46

Five are the same clientCertificates option copy-pasted across files, each sitting directly beneath a sibling that reads v1.8 or v1.40.

extractSince in utils/doclint/api_parser.js takes the text after the colon verbatim, so these reach the generated API metadata unchanged. Because the clientCertificates entry fans out across its nested properties, the seven source lines produce 42 malformed since values in api.json; with this change that count is 0.

Only the format changes. No version number is altered, npm run doc passes, and nothing else in the generated output differs.

Item 8 of #42544 catalogues five of these seven (credit to Ashraf Ali (@ashrafiucse)); class-browser.md's second occurrence and test-api/class-testoptions.md are not listed there. That issue bundles eight unrelated documentation problems, so this takes only the mechanical version-string item and leaves the rest untouched.

[Nicholas (Neekoras)]

@microsoft-github-policy-service agree