Fix broken links when master is changed to main

[lcawl]

Per #2521, when we switch from "master" to "main" for our documentation URLs, the following links break:

• /tmp/docsbuild/target_repo/html/cn/elasticsearch/php/6.0/_community_integrations.html See Update community.asciidoc elasticsearch-cn/elasticsearch-php#2
• /tmp/docsbuild/target_repo/html/en/elasticsearch/hadoop/5.0/float.html See Update index.adoc elasticsearch-hadoop#2000
• /tmp/docsbuild/target_repo/html/en/x-pack/5.0/field-and-document-access-control.html See https://github.com/elastic/x-pack/pull/5236
• /tmp/docsbuild/target_repo/html/en/kibana/main/release-notes-8.0.0-beta1.html See [DOCS] Fix link in release notes kibana#141322
• /tmp/docsbuild/target_repo/html/en/elastic-stack-glossary/main/terms.html See [DOCS] Fix hard-coded link in glossary stack-docs#2233
• /tmp/docsbuild/target_repo/html/en/elastic-stack/7.7/apm-highlights.html See Update apm-release-notes.asciidoc apm-server#9165
• https://www.elastic.co/guide/en/elasticsearch/plugins/2.4/cloud-aws-best-practices.html
• https://www.elastic.co/guide/en/elasticsearch/plugins/6.2/analysis-icu-collation-keyword-field.html
• https://www.elastic.co/guide/en/elasticsearch/reference/5.5/query-dsl-common-terms-query.html
• https://www.elastic.co/guide/en/elasticsearch/reference/8.4/http-clients.html [DOCS] Fix links to .NET and PHP clients elasticsearch#90276
• https://www.elastic.co/guide/en/enterprise-search-clients/php/master/connecting.html Update connecting.asciidoc enterprise-search-php#27
• https://www.elastic.co/guide/en/kibana/8.4/plugin-list.html#plugin-list [DOCS] Fix link in list of Kibana plugins kibana#141514
• https://www.elastic.co/guide/en/kibana/master/release-notes-8.0.0-beta1.html [DOCS] Fix links in release notes kibana#141520
• https://www.elastic.co/guide/en/welcome-to-elastic/current/troubleshooting-and-faqs.html https://github.com/elastic/tech-content/pull/241
• /tmp/docsbuild/target_repo/html/en/beats/devguide/6.0/metricset-details.html See [DOCS] Fix hard-coded mapping type doc link beats#33319
• /tmp/docsbuild/target_repo/html/en/beats/devguide/7.2/metricset-details.html See [DOCS] Fix hard-coded documentation link beats#33318
• /tmp/docsbuild/target_repo/html/en/app-search/current/web-crawler-reference.html https://github.com/elastic/enterprise-search-pubs/pull/2894
• /tmp/docsbuild/target_repo/html/en/kibana/8.5/kibana-troubleshooting-kibana-server-logs.html [DOCS] Fix links in Kibana troubleshooting kibana#144749
• /tmp/docsbuild/target_repo/html/en/kibana/main/connect-to-elasticsearch.html [DOCS] Fix link in Kibana Add Data kibana#145480
• /tmp/docsbuild/target_repo/html/en/kibana/7.17/create-rule-api.html [DOCS] Fix hard-coded link in create rule API kibana#145483

See also elastic/beats#33577