Fixed bad XML that was checked into strings.xml.

This caused lots of fallout, like menu accelerators appearing as
"missing_string(accel-win-ctrl)" instead of "Ctrl+". The offending
line was the ATTACH_HUD_CENTER_2 string, which had a messed up XML
close tag.

indra/newview/skins/default/xui/en/strings.xml

@@ -2085,7 +2085,7 @@ this texture in your inventory
 	<string name="ATTACH_BELLY">Belly</string>
 	<string name="ATTACH_RPEC">Right Pec</string>
 	<string name="ATTACH_LPEC">Left Pec</string>
-	<string name="ATTACH_HUD_CENTER_2"><HUD Center 2/string>
+	<string name="ATTACH_HUD_CENTER_2">HUD Center 2</string>
 	<string name="ATTACH_HUD_TOP_RIGHT">HUD Top Right</string>
 	<string name="ATTACH_HUD_TOP_CENTER">HUD Top Center</string>
 	<string name="ATTACH_HUD_TOP_LEFT">HUD Top Left</string>