Update mod-manager.rst

Signed-off-by: Squid Coder <92821989+realSquidCoder@users.noreply.github.com>

Author: realSquidCoder

docs/gui/mod-manager.rst

@@ -5,7 +5,7 @@ gui/mod-manager
     :summary: Manange your active mods.
     :tags: dfhack interface
 
-In a loaded world, shows a list of active mods with the ability to copyto clipboard.
+In a loaded world, shows a list of active mods with the ability to copy to clipboard.
 Adds an optional overlay to the mod list screen that allows you to save and
 load mod list presets, as well as set a default mod list preset for new worlds.