More [key]=value tweaks

Some rephrasings.

Update typeset -p for associative arrays to use new syntax.

Test/B02typeset.ztst

@@ -763,6 +763,7 @@
  for key in ${(ok)keyvalhash}; do
    print -l $key $keyvalhash[$key]
  done
+ typeset -p keyvalhash
 0:Substitution in [key]=val syntax
 >*
 >?not_globbed?
@@ -776,3 +777,4 @@
 >another value
 >the key
 >the value
+>typeset -A keyvalhash=( ['*']='?not_globbed?' ['another key']='another value' ['the key']='the value' )

Test/V10private.ztst

@@ -123,7 +123,7 @@
  print ${(kv)hash_test}
 0:private hides value from surrounding scope in nested scope
 >typeset -a hash_test=( top level )
->typeset -A hash_test=( in function )
+>typeset -A hash_test=( [in]=function )
 >typeset -g -a hash_test=( top level )
 >array-local top level
 >top level