[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

docs/source/plugin-development/checkers.rst

@@ -103,4 +103,3 @@ Here's a tutorial which goes over building an AST checking plugin from scratch:
     <div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto; margin-bottom: 1em;">
         <iframe src="https://www.youtube.com/embed/ot5Z4KQPBL8" frameborder="0" allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></iframe>
     </div>
-

docs/source/plugin-development/plugin-types.rst

@@ -19,4 +19,3 @@ Types of Plugins
 
 - **Report Plugins**: Plugins that receive errors and modify the way these are
   reported. They can take care of formatting, filtering, aggregating, etc.
-