Fix help message alignment

main.c

@@ -199,7 +199,7 @@ static const char usage[] =
 	"  -s <factor>     Set the output image scale factor. Defaults to the\n"
 	"                  greatest output scale factor.\n"
 	"  -g <geometry>   Set the region to capture.\n"
-	"  -t png|ppm|jpeg     Set the output filetype. Defaults to png.\n"
+	"  -t png|ppm|jpeg Set the output filetype. Defaults to png.\n"
 	"  -q <quality>    Set the JPEG filetype quality 0-100. Defaults to 80.\n"
 	"  -o <output>     Set the output name to capture.\n"
 	"  -c              Include cursors in the screenshot.\n";