Bump rocm-docs-core from 1.6.2 to 1.8.1 in /docs

Bumps [rocm-docs-core](https://github.com/ROCm/rocm-docs-core) from 1.6.2 to 1.8.1.
- [Release notes](https://github.com/ROCm/rocm-docs-core/releases)
- [Changelog](https://github.com/ROCm/rocm-docs-core/blob/v1.8.1/CHANGELOG.md)
- [Commits](ROCm/rocm-docs-core@v1.6.2...v1.8.1)

---
updated-dependencies:
- dependency-name: rocm-docs-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

docs/requirements.in

@@ -1,2 +1,2 @@
 sphinxcontrib-moderncmakedomain==3.29.0
-rocm-docs-core==1.6.2
+rocm-docs-core==1.8.1

docs/requirements.txt

@@ -92,7 +92,7 @@ requests==2.32.3
     # via
     #   pygithub
     #   sphinx
-rocm-docs-core==1.6.2
+rocm-docs-core==1.8.1
     # via -r requirements.in
 smmap==5.0.1
     # via gitdb