Updated docs

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docs/objects/Dropdown/getItemCount.md

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+## getItemCount
+Returns the current item count
+
+#### Returns:
+1. `number` The item list count
+
+#### Usage:
+* Creates a default dropdown with 3 entries and prints the current item count.
+```lua
+local mainFrame = basalt.createFrame()
+local aDropdown = mainFrame:addDropdown()
+aDropdown:addItem("1. Entry")
+aDropdown:addItem("2. Entry",colors.yellow)
+aDropdown:addItem("3. Entry",colors.yellow,colors.green)
+basalt.debug(aDropdown:getItemCount())
+```