all: fix a number of bad godocs spotted by gopls
Mostly typos of the declared name, sentences which mentioned the name
later on rather than at the beginning, as well as some comments
which did not intend to be a godoc at all.
While here, we tweak a few to use links too.
Signed-off-by: Daniel Martí <mvdan@mvdan.cc>
Change-Id: I0ef2f22ddfc6b1e3b67acbbaa7c74cb6187eae1b
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1224421
Reviewed-by: Roger Peppe <rogpeppe@gmail.com>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>