Problem: tex syntax file does not support some of the math equation
environments provided by amsmath.sty, therefore well-formed
snippet is highlighted as "texBadMath"
Solution: add the environments
closes: #18433
Signed-off-by: Eisuke Kawashima <e-kwsm@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
