Plugin.hs(performPlugin): Use `PluginAction` type

Instead of manually writing out the type of the action function returned
from `performPlugin`, use the consolidated `PluginAction` type.

This makes it easier for us to change the `PluginAction` type signature
if necessary.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Plugin.hs b/src/Plugin.hs
index d6598ec..73df169 100644
--- a/src/Plugin.hs
+++ b/src/Plugin.hs
@@ -23,7 +23,7 @@ matchPlugins message plugins =
     [p | p <- plugins, M.text message =~ matchRegex p]
 
 -- | Run the action belonging to the plugin, stored in its `perform` field.
-performPlugin :: Plugin -> M.Message -> String
+performPlugin :: Plugin -> PluginAction
 performPlugin p message = perform p $ message
 
 -- | The list of plugins to load