plugins/omclickhouse: fix metadata formatting issues

Fixes the module metadata YAML to satisfy linting by removing inline backticks, wrapping long strings, and using folded blocks for notes. This resolves CI syntax errors introduced when documenting the mock ClickHouse coverage.

AI-Agent: ChatGPT

Author: rgerhards

plugins/omclickhouse/MODULE_METADATA.yaml

@@ -1,15 +1,21 @@
 support_status: core-supported
 maturity_level: mature
-primary_contact: "GitHub Discussions & Issues <https://github.com/rsyslog/rsyslog/discussions>"
+primary_contact: >-
+  GitHub Discussions & Issues <https://github.com/rsyslog/rsyslog/discussions>
 last_reviewed: 2024-07-23
 build_dependencies:
   - libcurl development headers
   - json-c development headers
 runtime_dependencies:
   - ClickHouse server reachable over HTTP(S)
-  - `clickhouse-client` CLI for local testing
+  - clickhouse-client CLI for local testing
 ci_targets: []
 documentation: []
 notes:
-  - Module posts SQL INSERT statements via the ClickHouse HTTP interface and relies on libcurl for transport.
-  - Quick CI coverage now uses tests/clickhouse-mock-server.py with tests/clickhouse-mock.sh to emulate a ClickHouse endpoint; heavier integration scripts exit 77 until reworked.
+  - >-
+    Module posts SQL INSERT statements via the ClickHouse HTTP interface and
+    relies on libcurl for transport.
+  - >-
+    Quick CI coverage now uses tests/clickhouse-mock-server.py together with
+    tests/clickhouse-mock.sh to emulate a ClickHouse endpoint; heavier
+    integration scripts exit 77 until they are reworked.