Update manim/mobject/numbers.py

Co-authored-by: Benjamin Hackl <[email protected]>

Author: nilaybhatia

manim/mobject/numbers.py

@@ -170,7 +170,7 @@ class Variable(VMobject):
 
     Attributes
     ----------
-    label : Union[:class:`str`, :class:`~.Tex`, :class:`~.MathTex`, :class:`Text`, :class:`TexSymbol`, :class:`SingleStringMathTex`, :class:`MathTexFromPresetString`]
+    label : Union[:class:`str`, :class:`~.Tex`, :class:`~.MathTex`, :class:`~.Text`, :class:`~.TexSymbol`, :class:`~.SingleStringMathTex`, :class:`~.MathTexFromPresetString`]
         The label for your variable, for example ``x = ...``.
     tracker : :class:`~.ValueTracker`
         Useful in updating the value of your variable on-screen.