fix xychart test cases

Author: darshanr0107

packages/mermaid/src/diagrams/xychart/parser/xychart.jison

@@ -29,8 +29,8 @@
 <acc_descr_multiline>"{"                 { this.popState(); }
 <acc_descr_multiline>[^\}]*               { return "acc_descr_multiline_value"; }
 
-"xychart"                                 {return 'XYCHART';}
 "xychart-beta"                            {return 'XYCHART';}
+"xychart"                                 {return 'XYCHART';}
 (?:"vertical"|"horizontal")               {return 'CHART_ORIENTATION'}
 
 "x-axis"                                  { this.pushState("axis_data"); return "X_AXIS"; }

packages/mermaid/src/diagrams/xychart/parser/xychart.jison.spec.ts

@@ -407,7 +407,7 @@ describe('Testing xychart jison file', () => {
   it('parse multiple bar and line variant 2', () => {
     const str = `
     xychart horizontal
-    title Basic xychart
+    title "Basic xychart"
     x-axis "this is x axis" [category1, "category 2", category3]
     y-axis yaxisText 10 --> 150
  bar barTitle1 [23, 45, 56.6]