Update docs.asciidoc (#36050) (#36051)

(cherry picked from commit 2dc3f67)

Co-authored-by: Roberto Seldner <rseldner@users.noreply.github.com>

metricbeat/module/system/filesystem/_meta/docs.asciidoc

@@ -17,7 +17,7 @@ not be collected from filesystems matching these types. This setting also
 affects the `fsstats` metricset. If this option is not set, metricbeat ignores
 all types for virtual devices in systems where this information is available (e.g.
 all types marked as `nodev` in `/proc/filesystems` in Linux systems). This can be set to an empty list (`[]`)
-to make filebeat report all filesystems, regardless of type.
+to make metricbeat report all filesystems, regardless of type.
 
 [float]
 === Filtering