docs(comb): Clarify escaped_transform

[epage]

I'm assuming I dropped the argument descriptions because they were mostly re-wording of the argument. However, the parenthetical statement on normal is important.

I do wonder if we should make a no-advance an assert like we do for repeat.

Raised in #503

[coveralls]

Pull Request Test Coverage Report for Build 10045657178

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 42.173%

---

Totals
Change from base Build 10010612262:	0.03%
Covered Lines:	1312
Relevant Lines:	3111

---

💛 - Coveralls