bug#64367: 28.2; doc string of `text-property-search-forward'

[Drew Adams]

The signature is this:

(text-property-search-forward PROPERTY
   &optional VALUE PREDICATE NOT-CURRENT)

The arguments should be described in order.

But the first line of the doc string - the most important - says this:

 Search for the next region of text where PREDICATE is true.

Not only is PREDICATE optional; it is not even the first optional arg.
The first line should describe the _default_ behavior (nil VALUE, nil
PREDICATE).  Something like this:

 Search forward for text where PROPERTY is non-nil.

Then go on to introduce, first VALUE, then PREDICATE, then NOT-CURRENT.

In GNU Emacs 28.2 (build 2, x86_64-w64-mingw32)
 of 2022-09-13
Windowing system distributor `Microsoft Corp.', version 10.0.19045
Configured using:
 `configure --with-modules --without-dbus --with-native-compilation
 --without-compress-install CFLAGS=-O2'