Updated docs

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docs/objects/Label/setText.md

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+## setText
+Sets the text which gets displayed.
+
+#### Parameters: 
+1. `string` The text which should be displayed
+
+#### Returns:
+1. `object` The object in use
+
+#### Usage:
+* Creates a default label with text "Some random text".
+```lua
+local mainFrame = basalt.createFrame()
+local aLabel = mainFrame:addLabel():setText("Some random text")
+```
+```xml
+<label text="Some random text" />
+```