fix: Use AST to replace notes & warnings.

docs/community/newDiagram.md

@@ -32,10 +32,8 @@ statement
 
 In the extract of the grammar above, it is defined that a call to the setTitle method in the data object will be done when parsing and the title keyword is encountered.
 
-> **Note**\
+> **Note**
 > Make sure that the `parseError` function for the parser is defined and calling `mermaid.parseError`. This way a common way of detecting parse errors is provided for the end-user.
->
-> >
 
 For more info look in the example diagram type:
 
@@ -50,8 +48,7 @@ exports.parseError = function (err, hash) {
 when parsing the `yy` object is initialized as per below:
 
 ```javascript
-var parser;
-parser = exampleParser.parser;
+const parser = exampleParser.parser;
 parser.yy = db;
 ```
 
@@ -74,8 +71,8 @@ At this point when mermaid is trying to render the diagram, it will detect it as
 ### Setup
 
 ```javascript
-var graph = require('./graphDb');
-var flow = require('./parser/flow');
+const graph = require('./graphDb');
+const flow = require('./parser/flow');
 flow.parser.yy = graph;
 ```
 
@@ -96,7 +93,7 @@ graph.getEdges();
 The parser is also exposed in the mermaid api by calling:
 
 ```javascript
-var parser = mermaid.getParser();
+const parser = mermaid.getParser();
 ```
 
 Note that the parse needs a graph object to store the data as per: