docs: spelling fixes
Squashed into 1 commit because I'm lazy:
- non-existant -> nonexistent
- accros -> across
- comptatibility -> compatibility
- requieres -> requires
- aliast -> alias
- unexistent -> nonexistent
- convertion -> conversion
- nto -> not
$ cat >> $HGRCPATH <<EOF
> [ui]
> logtemplate={rev}:{node|short}[{bookmarks}] ({obsolete}/{phase}) {desc|firstline}\n
> [extensions]
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
$ mkcommit() {
> echo "$1" > "$1"
> hg add "$1"
> hg ci -m "add $1"
> }
$ hg init repo
$ cd repo
$ mkcommit a
$ mkcommit b
test disabling commands
$ cat >> .hg/hgrc <<EOF
> [experimental]
> evolution=createmarkers
> allowunstable
> exchange
> EOF
$ hg prune | head -n 2
hg: unknown command 'prune'
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