Add doc references to `regex_search` jinja filter #1490

Job	Run time
Linting and tests / Lint entire project	1m 17s
Linting and tests / Lint, test, and build frontend	1m 42s
Linting and tests / Lint database migrations	1m 1s
Linting and tests / Test technical documentation	14s
Linting and tests / Helm Chart Unit Tests	17s
Linting and tests / mypy	1m 33s
Linting and tests / Backend Tests: Plugin	33s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: True)	3m 2s
Linting and tests / Backend Tests: MySQL + RabbitMQ (RBAC enabled: False)	2m 54s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: True)	3m 23s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: True)	2m 39s
Linting and tests / Backend Tests: PostgreSQL + RabbitMQ (RBAC enabled: False)	3m 32s
Linting and tests / Backend Tests: SQLite + Redis (RBAC enabled: False)	2m 52s
Linting and tests / Unit tests - Migrators	19s
Snyk security scan / Snyk security scan	1m 21s
Linting and tests / Standard e2e tests (11.2.0) / Grafana: 11.2.0	7m 49s
Linting and tests / Standard e2e tests (10.3.0) / Grafana: 10.3.0	8m 5s
Linting and tests / Standard e2e tests (latest) / Grafana: latest	8m 33s
	51m 6s

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