docs: Update pre-commit hook example

Update syntax of pre-commit hook docs to work with newer pre-commit versions.

Closes #551, #553

docs/integration.rst

@@ -4,7 +4,7 @@ Integration with other software
 Integration with pre-commit
 ---------------------------
 
-You can integrate yamllint in `pre-commit <http://pre-commit.com/>`_ tool.
+You can integrate yamllint in the `pre-commit <https://pre-commit.com/>`_ tool.
 Here is an example, to add in your .pre-commit-config.yaml
 
 .. code:: yaml
@@ -12,11 +12,13 @@ Here is an example, to add in your .pre-commit-config.yaml
   ---
   # Update the rev variable with the release version that you want, from the yamllint repo
   # You can pass your custom .yamllint with args attribute.
+  repos:
     - repo: https://github.com/adrienverge/yamllint.git
-    rev: v1.17.0
+      rev: v1.29.0
       hooks:
         - id: yamllint
-        args: [-c=/path/to/.yamllint]
+          args: [--strict, -c=/path/to/.yamllint]
+
 
 Integration with GitHub Actions
 -------------------------------