docs(readme): fix rstcheck violation [skip ci]

``` docs/README.rst:66: (WARNING/2) (rst) Link is formatted in Markdown style. ```
saltstack-formulas · May 18, 2021 · 90f356c · 90f356c
1 parent fc87b11
commit 90f356c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/README.rst b/docs/README.rst
@@ -63,7 +63,7 @@ Metastate used to include service into respective plugin states, included in ``c
 ``collectd.apache``
 ^^^^^^^^^^^^^^^^^^^
 
-Enables and configures the [apache](https://collectd.org/wiki/index.php/Plugin:Apache) plugin.
+Enables and configures the `apache plugin <https://collectd.org/wiki/index.php/Plugin:Apache>`_.
 All common parameters are supported, so pass something like ::
 
     apache: