manuals: suppress excess use of "following" word

To simplify the style, replace "Following is" and "Following are"
by "here is" and "here are", sounding more natural.

In some cases, also go further by simplifying "Here are/is xxx"
by "xxx are/is" when the "are" or "is" are not two far at
the end of the sentence.

In some cases too, completely remove the sentence, when
it's redundant with the preceding title.

(From yocto-docs rev: 2539f1b9cbf9bdd40eff93c6522dc76133debed7)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
CC: Daniel Ammann <daniel.ammann@bytesatwork.ch>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

documentation/ref-manual/faq.rst

@@ -312,7 +312,7 @@ HTTPS requests and direct them to the ``http://`` sources mirror. You
 can use ``file://`` URLs to point to local directories or network shares
 as well.
 
-Here are other options::
+Another option is to set::
 
    BB_NO_NETWORK = "1"
 
@@ -328,7 +328,7 @@ This statement
 limits the build system to pulling source from the :term:`PREMIRRORS` only.
 Again, this technique is useful for reproducing builds.
 
-Here is another technique::
+Here is yet another technique::
 
    BB_GENERATE_MIRROR_TARBALLS = "1"