fix triple quotation marks

docs/metadata/metadata.md

@@ -23,7 +23,7 @@ These are the attributes which can be used within the Metadata File:
 
 This example is a Metadata file with a basic collection which is saved in a file called `MyCollections.yml` within the location mapped as `config` in my setup.
 
-???+ example "Example "MyCollections.yml"""
+???+ example "Example "MyCollections.yml""
 
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docs/metadata/overlay.md

@@ -9,7 +9,7 @@ Overlays and templates are defined within one or more Overlay files, which are l
 
 This example is an Overlay file with a basic overlay which is saved in a file called `MyOverlays.yml` within the location mapped as `config` in my setup.
 
-???+ example "Example "MyOverlays.yml"""
+???+ example "Example "MyOverlays.yml""
 
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docs/metadata/playlist.md

@@ -15,7 +15,7 @@ You can use the [`playlist_report` setting](../config/settings.md#playlist-repor
 This example is a Playlist file with a basic overlay which is saved in a file called `MyPlaylists.yml` within the location mapped as `config` in my setup.
 
 
-???+ example "Example "MyPlaylists.yml"""
+???+ example "Example "MyPlaylists.yml""
 
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