feat(doc): text examples

Author: NaejDoree

playground/graphics/graphics-text.md

@@ -14,6 +14,8 @@ graphicEntityModule.createText("Hello World")
     .setFontSize(50)
     .setFillColor(0x000000); // Setting the text color to black
 ```
+![Example](resources/text-1.png)
+
 The only font family values that will work are: 
 "Lato" and those that are available by default on all browsers.
 If the browser does not recognise the font family, it will be displayed in a fallback font chosen by the browser.
@@ -25,11 +27,12 @@ This class is used to display text using a bitmap font in your assets folder.
 ```java
 graphicEntityModule.createBitmapText()
     .setText("Hello World")
-    .setFontFamily("myCustomFont")
+    .setFont("myCustomFont")
     // Assuming that you have a working 'myCustomFont.fnt' and 'myCustomFont.png' in your assets folder
     .setFontSize(50)
     .setTint(0xff0000); // Tinting it in red
 ```
+![Example](resources/text-2.png)
 
 Extra tips :
 - A little help to turn fonts into bitmap fonts : http://kvazars.com/littera/