Updated docs

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docs/objects/Label/setFontSize.md

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+## setFontSize
+Sets the font size, calculated by bigfonts. Default size is 1.
+
+#### Parameters: 
+1. `number` The size (1, 2, 3, 4)
+
+#### Returns:
+1. `object` The object in use
+
+#### Usage:
+* Creates a default label, sets the text to "Basalt!" and its font size to 2.
+```lua
+local mainFrame = basalt.createFrame()
+local aLabel = mainFrame:addLabel():setText("Basalt!"):setFontSize(2)
+```
+```xml
+<label font="2" />
+```