Updated some formatting

Updated formatting for object

docs/objects/Object/onReposition.md

@@ -0,0 +1,22 @@
+# Object - Event
+
+## onReposition
+
+`onReposition(self)`
+
+This is a custom event which gets triggered as soon as the object gets repositioned (for example by dynamic value).
+
+Here is a example on how to add a onReposition event to your button:
+
+```lua
+local basalt = require("basalt")
+
+local main = basalt.createFrame()
+local aButton = main:addButton():setPosition(3,3)
+
+local function onButtonReposition(self)
+    self:setSize(self:getWidth() - self:getX(), 3)
+end
+
+aButton:onReposition(onButtonReposition)
+```