Add setHeading() in PVector JSON

Author: babaissarkar

content/references/translations/en/processing/PVector.json

@@ -93,6 +93,11 @@
       "name": "heading()",
       "desc": "Calculate the angle of rotation for this vector"
     },
+    {
+      "anchor": "PVector_setHeading_",
+      "name": "setHeading()",
+      "desc": "Set the direction for this vector"
+    },
     {
       "anchor": "PVector_rotate_",
       "name": "rotate()",