Bump pymdown-extensions from 10.12 to 10.16.1 in /docs

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 10.12 to 10.16.1.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@10.12...10.16.1)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-version: 10.16.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -38,15 +38,15 @@ mergedeep==1.3.4
     #   mkdocs-get-deps
 mkdocs==1.6.1
     # via
-    #   -r docs/requirements.in
+    #   -r requirements.in
     #   mkdocs-macros-plugin
     #   mkdocs-material
 mkdocs-get-deps==0.2.0
     # via mkdocs
 mkdocs-macros-plugin==1.3.7
-    # via -r docs/requirements.in
+    # via -r requirements.in
 mkdocs-material==9.5.45
-    # via -r docs/requirements.in
+    # via -r requirements.in
 mkdocs-material-extensions==1.3.1
     # via mkdocs-material
 packaging==24.2
@@ -63,11 +63,11 @@ platformdirs==4.3.6
     # via mkdocs-get-deps
 pygments==2.18.0
     # via
-    #   -r docs/requirements.in
+    #   -r requirements.in
     #   mkdocs-material
-pymdown-extensions==10.12
+pymdown-extensions==10.16.1
     # via
-    #   -r docs/requirements.in
+    #   -r requirements.in
     #   mkdocs-material
 python-dateutil==2.9.0.post0
     # via