Updated Container docs

updated docs for container (child instead of object)

docs/objects/Container/removeChild.md

@@ -0,0 +1,37 @@
+## removeChild
+
+### Description
+
+Removes an object from the container by its ID. If the object is not a direct child of the container, this method will not remove it.
+
+### Parameters
+
+1. `string` id - The ID of the object you want to retrieve.
+
+### Returns
+
+1. `boolean` true if the object was removed
+
+### Usage
+
+```lua
+local main = basalt.createFrame()
+local container = main:addFrame("container")
+local button = container:addButton("removableButton")
+    :setPosition(2, 2)
+    :setText("Remove me")
+
+main:addButton()
+    :setPosition(2, 4)
+    :setText("Remove the button above")
+    :onClick(function()
+        local removed = container:removeChild("removableButton")
+        if removed then
+            basalt.debug("Button removed!")
+        else
+            basalt.debug("Button not found!")
+        end
+    end)
+
+basalt.autoUpdate()
+```