Update CSS math functions

[ramiy]

Description

Update CSS math functions based on @wbamberg feedback: https://github.com/mdn/content/pull/20838#discussion_r975911742 and https://github.com/mdn/content/pull/20838#discussion_r975913282.

Update live example based on the official guidelines.

In addition, I added missing "Parameters" and "Return values".

Motivation

Standardization and consistency.

Related issues and pull requests

Relates to #19832

[github-actions[bot]]

Preview URLs (10 pages)

• /en-US/docs/Web/CSS/abs
• /en-US/docs/Web/CSS/acos
• /en-US/docs/Web/CSS/asin
• /en-US/docs/Web/CSS/atan2
• /en-US/docs/Web/CSS/atan
• /en-US/docs/Web/CSS/cos
• /en-US/docs/Web/CSS/log
• /en-US/docs/Web/CSS/sign
• /en-US/docs/Web/CSS/sin
• /en-US/docs/Web/CSS/tan

Flaws (5)

Note! 9 documents with no flaws that don't need to be listed. 🎉

URL: /en-US/docs/Web/CSS/log Title: log() Flaw count: 5

• macros:
  • /en-US/docs/Web/CSS/exp does not exist
  • /en-US/docs/Web/CSS/pow does not exist
  • /en-US/docs/Web/CSS/sqrt does not exist
  • /en-US/docs/Web/CSS/hypot does not exist
  • /en-US/docs/Web/CSS/exp does not exist

(this comment was updated 2022-09-22 11:42:16.725354)