Fixed RightArcAngleExample for :class:~.Angle in documentation

[PhotonSpheres]

Changelog / Overview

Motivation

The first example in https://docs.manim.community/en/stable/reference/manim.mobject.geometry.Angle.html?highlight=angle is not rendering correctly.

Explanation for Changes

My guess is that, while changing to the meta-class system for open-gl, this dot option has been overlooked.

https://manimce--1643.org.readthedocs.build/en/1643/reference/manim.mobject.geometry.Angle.html?highlight=angle#manim.mobject.geometry.Angle

Testing Status

Further Comments

Checklist

• I have read the Contributing Guidelines
• I have written a descriptive PR title (see top of PR template for examples)
• I have written a changelog entry for the PR or deem it unnecessary
• My new functions/classes either have a docstring or are private
• My new functions/classes have tests added and (optional) examples in the docs
• My new documentation builds, looks correctly formatted, and adds no additional build warnings

Reviewer Checklist

• The PR title is descriptive enough
• The PR is labeled correctly
• The changelog entry is completed if necessary
• Newly added functions/classes either have a docstring or are private
• Newly added functions/classes have tests added and (optional) examples in the docs
• Newly added documentation builds, looks correctly formatted, and adds no additional build warnings

[naveen521kk]

LGTM
On a side note, I don't think this will be counted for hackathon.