update target docs that need alteration for new interface

doc/ace-javascript-target.md

@@ -239,7 +239,7 @@ AnnotatingErrorListener.prototype.syntaxError = function(recognizer, offendingSy
 With this, all that remains to be done is plug the listener in when we parse the code. Here is how I do it:
 ```js
 var validate = function(input) {
-    var stream = new antlr4.InputStream(input);
+    var stream = CharStreams.fromString(input);
     var lexer = new mylanguage.MyLexer(stream);
     var tokens = new antlr4.CommonTokenStream(lexer);
     var parser = new mylanguage.MyParser(tokens);
@@ -252,4 +252,4 @@ var validate = function(input) {
 };
 ```
 You know what? That's it! You now have an ACE editor that does syntax validation using ANTLR! I hope you find this useful, and simple enough to get started.
-WNow wait, hey! How do you debug this? Well, as usual, using Chrome, since no other browser is able to debug worker code. What a shame...
+Now wait, hey! How do you debug this? Well, as usual, using Chrome, since no other browser is able to debug worker code. What a shame...

doc/csharp-target.md

@@ -35,7 +35,7 @@ using Antlr4.Runtime;
      
 public void MyParseMethod() {
       String input = "your text to parse here";
-      AntlrInputStream stream = new InputStream(input);
+      ICharStream stream = new CharStreams.fromString(input);
       ITokenSource lexer = new MyGrammarLexer(stream);
       ITokenStream tokens = new CommonTokenStream(lexer);
       MyGrammarParser parser = new MyGrammarParser(tokens);

doc/javascript-target.md

@@ -96,7 +96,7 @@ Now a fully functioning script might look like the following:
 
 ```javascript
    var input = "your text to parse here"
-   var chars = new antlr4.InputStream(input);
+   var chars = CharStreams.fromString(input);
    var lexer = new MyGrammarLexer.MyGrammarLexer(chars);
    var tokens  = new antlr4.CommonTokenStream(lexer);
    var parser = new MyGrammarParser.MyGrammarParser(tokens);