Documentation: filesystems: mount_api: drop doubled word

Drop the doubled word "struct".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/20200703214325.31036-7-rdunlap@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/filesystems/mount_api.rst

@@ -213,7 +213,7 @@ The filesystem context points to a table of operations::
 		void (*free)(struct fs_context *fc);
 		int (*dup)(struct fs_context *fc, struct fs_context *src_fc);
 		int (*parse_param)(struct fs_context *fc,
-				   struct struct fs_parameter *param);
+				   struct fs_parameter *param);
 		int (*parse_monolithic)(struct fs_context *fc, void *data);
 		int (*get_tree)(struct fs_context *fc);
 		int (*reconfigure)(struct fs_context *fc);
@@ -247,7 +247,7 @@ manage the filesystem context.  They are as follows:
    * ::
 
 	int (*parse_param)(struct fs_context *fc,
-			   struct struct fs_parameter *param);
+			   struct fs_parameter *param);
 
      Called when a parameter is being added to the filesystem context.  param
      points to the key name and maybe a value object.  VFS-specific options