treewide: fixup for pre-commit

LICENSE

@@ -35,7 +35,7 @@ Mozilla Public License Version 2.0
     means any form of the work other than Source Code Form.
 
 1.7. "Larger Work"
-    means a work that combines Covered Software with other material, in 
+    means a work that combines Covered Software with other material, in
     a separate file or files, that is not Covered Software.
 
 1.8. "License"
@@ -371,4 +371,3 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
 
   This Source Code Form is "Incompatible With Secondary Licenses", as
   defined by the Mozilla Public License, v. 2.0.
-

example/main.go

@@ -19,9 +19,10 @@ package main
 import (
 	"flag"
 	"fmt"
+	"os"
+
 	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/event"
-	"os"
 )
 
 var homeserver = flag.String("homeserver", "", "Matrix homeserver")