Update source file messages.properties

cloud-translations-core/src/main/resources/org/incendo/cloud/core/lang/messages.properties

@@ -1,7 +1,7 @@
 argument.parse.failure.boolean=Could not parse boolean from '<input>'
 argument.parse.failure.number='<input>' is not a valid number in the range <min> to <max>
 argument.parse.failure.char='<input>' is not a valid character
-argument.parse.failure.string='<input>' is not one of the following\: <acceptableValues>
+argument.parse.failure.string='<input>' is not one of the following: <acceptableValues>
 argument.parse.failure.uuid='<input>' is not a valid string of type <stringMode>
 argument.parse.failure.enum='<input>' is not a valid UUID
 argument.parse.failure.regex='<input>' does not match '<pattern>'
@@ -13,11 +13,11 @@ argument.parse.failure.flag.no_permission=You don't have permission to use '<fla
 argument.parse.failure.color='<input>' is not a valid color
 argument.parse.failure.duration='<input>' is not a duration format
 argument.parse.failure.aggregate.missing=Missing component '<component>'
-argument.parse.failure.aggregate.failure=Invalid component '<component>'\: <failure>
+argument.parse.failure.aggregate.failure=Invalid component '<component>': <failure>
 argument.parse.failure.either=Could not resolve <primary> or <fallback> from '<input>'
 exception.unexpected=An internal error occurred while attempting to perform this command.
-exception.invalid_argument=Invalid Command Argument\: <cause>.
+exception.invalid_argument=Invalid Command Argument: <cause>.
 exception.no_such_command=Unknown Command.
 exception.no_permission=I'm sorry, but you do not have permission to perform this command.
 exception.invalid_sender=<actual> is not allowed to execute that command. Must be of type <expected>.
-exception.invalid_syntax=Invalid Command Syntax. Correct command syntax is\: <syntax>.
+exception.invalid_syntax=Invalid Command Syntax. Correct command syntax is: <syntax>.