Fix example docs

Signed-off-by: Bernát Gábor <[email protected]>

Author: gaborbernat

.pre-commit-config.yaml

@@ -18,6 +18,10 @@ repos:
     rev: "2.4.3"
     hooks:
       - id: pyproject-fmt
+  - repo: https://github.com/abravalheri/validate-pyproject
+    rev: "v0.21"
+    hooks:
+      - id: validate-pyproject
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: "v0.7.0"
     hooks:

docs/config.rst

@@ -839,13 +839,13 @@ Python run
 
        .. code-block:: toml
 
-          [dependency_groups]
+          [dependency-groups]
           test = [
              "pytest>=8",
           ]
 
           [tool.tox.env_run_base]
-          dependency-groups = [
+          dependency_groups = [
             "test",
           ]