Fix microsoft#206292. Revert ruby decrease indent rule. (microsoft#206295)

Author: rebornix

extensions/ruby/language-configuration.json

@@ -26,6 +26,6 @@
 	],
 	"indentationRules": {
 		"increaseIndentPattern": "^\\s*((begin|class|(private|protected)\\s+def|def|else|elsif|ensure|for|if|module|rescue|unless|until|when|in|while|case)|([^#]*\\sdo\\b)|([^#]*=\\s*(case|if|unless)))\\b([^#\\{;]|(\"|'|\/).*\\4)*(#.*)?$",
-		"decreaseIndentPattern": "^\\s*([}\\]]([,)]?\\s*(#|$)|\\.[a-zA-Z_]\\w*\\b)|(end|rescue|ensure|else|elsif)\\b)|((in|when)\\s)"
+		"decreaseIndentPattern": "^\\s*([}\\]]([,)]?\\s*(#|$)|\\.[a-zA-Z_]\\w*\\b)|(end|rescue|ensure|else|elsif|when|in)\\b)"
 	}
 }