Fix link to Splunk documentation in CONTRIBUTING template (#346)

* Fix link to Splunk documentation in CONTRIBUTING template

Co-authored-by: Robert Pająk <[email protected]>

Author: Kielek

CHANGELOG.md

@@ -10,6 +10,8 @@
 
 - `SPLUNK_PROFILER_CALL_STACK_INTERVAL` defaults to `1000` for single-threaded runtimes.
   [#325](https://github.com/signalfx/gdi-specification/pull/325)
+- Fix link to Splunk documentation in `CONTRIBUTING.md` template.
+  [#346](https://github.com/signalfx/gdi-specification/pull/346)
 
 ### Repository
 

specification/templates/CONTRIBUTING.md

@@ -34,11 +34,11 @@ See [SECURITY.md](SECURITY.md#reporting-security-issues) for instructions.
 ## Documentation
 
 The Splunk Observability documentation is hosted on the [Splunk Observability
-Cloud docs site](https://docs.splunk.com/Observability), which contains all the
-prescriptive guidance for Splunk Observability products. Prescriptive guidance
-consists of step-by-step instructions, conceptual material, and decision support
-for customers. Reference documentation and development documentation is still
-hosted on this repository.
+Cloud docs site](https://help.splunk.com/en/splunk-observability-cloud), which
+contains all the prescriptive guidance for Splunk Observability products.
+Prescriptive guidance consists of step-by-step instructions, conceptual material,
+and decision support for customers. Reference documentation and development
+documentation is still hosted on this repository.
 
 To contribute documentation for this project, open a pull request in the
 [public-o11y-docs](https://github.com/splunk/public-o11y-docs) repository. See