Fix option name.

Author: felixfontein

docs/changelog-configuration.md

@@ -46,7 +46,7 @@ parts of the version of the release.
 
 > [!NOTE]
 > The file extension (default `.rst`) will always be replaced by the
-> extension matching the output format (see [`output_format`](#output_format-list-of-strings)).
+> extension matching the output format (see [`output_formats`](#output_formats-list-of-strings)).
 > Therefore the extension provided here will always be ignored.
 
 ### `changelog_filename_version_depth` (integer)
@@ -240,7 +240,7 @@ When set to `true`, uses FQCN (Fully Qualified Collection Names) when
 mentioning new plugins and modules. This means that `namespace.name.`
 is prepended to the plugin respectively module names.
 
-### `output_format` (list of strings)
+### `output_formats` (list of strings)
 
 The default is `["rst"]`.
 

docs/changelogs.md

@@ -37,7 +37,7 @@ file to your needs. The settings of highest interest are:
 
 1. `title`: This is by default the titlecase of your collection's
    namespace and name. Feel free to insert a nicer name here.
-2. `output_format`: This is by default `[rst]`. Change this to `[rst, md]`
+2. `output_formats`: This is by default `[rst]`. Change this to `[rst, md]`
    to output both a RST and MarkDown version of the changelog, or to `[md]`
    to only output a MarkDown version.
 3. `keep_fragments`: The default value `false` removes the fragment

docs/other-projects.md

@@ -36,7 +36,7 @@ configuration file to your needs. The settings of highest interest are:
 
 1. `title`: This is by default `Project`. Please replace this with the
    name of your project.
-2. `output_format`: This is by default `[rst]`. Change this to `[rst, md]`
+2. `output_formats`: This is by default `[rst]`. Change this to `[rst, md]`
    to output both a RST and MarkDown version of the changelog, or to `[md]`
    to only output a MarkDown version.
 3. `use_semantic_versioning`: The default value `true` assumes that