Bump rocm-docs-core from 0.30.3 to 0.31.0 in /docs/sphinx

Bumps [rocm-docs-core](https://github.com/RadeonOpenCompute/rocm-docs-core) from 0.30.3 to 0.31.0.
- [Release notes](https://github.com/RadeonOpenCompute/rocm-docs-core/releases)
- [Changelog](https://github.com/RadeonOpenCompute/rocm-docs-core/blob/develop/CHANGELOG.md)
- [Commits](ROCm/rocm-docs-core@v0.30.3...v0.31.0)

---
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/sphinx/requirements.in

@@ -1 +1 @@
-rocm-docs-core==0.30.3
+rocm-docs-core==0.31.0

docs/sphinx/requirements.txt

@@ -100,7 +100,7 @@ requests==2.31.0
     # via
     #   pygithub
     #   sphinx
-rocm-docs-core==0.30.3
+rocm-docs-core==0.31.0
     # via -r requirements.in
 smmap==5.0.0
     # via gitdb