manpage: add missing "specify" (Thanks xeen)

diff --git a/i3lock.1 b/i3lock.1
index 7147d4a89b4dc70bd7560c6637010c12e41f67a7..7fb86a1ba1e5a74e8c23683350926c8cea7b0191 100644 (file)
--- a/i3lock.1
+++ b/i3lock.1
@@ -39,7 +39,7 @@ entering your password.
 * i3lock forks, so you can combine it with an alias to suspend to RAM (run "i3lock && echo mem > /sys/power/state" to get a locked screen after waking up your computer from suspend to RAM)
 
 .TP
-* You can either a background color or a PNG image which will be displayed while your screen is locked.
+* You can specify either a background color or a PNG image which will be displayed while your screen is locked.
 
 .TP
 * You can specify whether i3lock should bell upon a wrong password.