Update tex_templates.yml

[MarkHoo]

Fix the error that occurs when using Chinese

Motivation

Fix the error that occurs when using Chinese

Proposed changes

• tex_templates.yml

Test

Code:

from manimlib import *


class Demo(Scene):
    def construct(self):
        tex = Tex("Hello你好World")
        self.play(Write(tex))
        self.wait(5)

Result: