Fix line comment syntax to work with lightshow

Author: vors

Support/PowershellSyntax.tmLanguage

@@ -44,8 +44,10 @@
 			</array>
 		</dict>
 		<dict>
-			<key>match</key>
-			<string>(?&lt;![\\-])#.*$</string>
+			<key>begin</key>
+			<string>(?&lt;![\\-])#</string>
+			<key>end</key>
+			<string>$</string>
 			<key>name</key>
 			<string>comment.line.number-sign.powershell</string>
 			<key>patterns</key>