get_abi.pl: seek for all occurrences for Documentation/ABI

Instead of retrieving just one match at most, ensure that the entire
description will be parsed.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/17019b73e106d1b1b353b8880ed189bad3604c13.1616668017.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

scripts/get_abi.pl

@@ -380,7 +380,7 @@ sub output_rest {
 
 				$desc =~ s,Documentation/(?!devicetree)(\S+)\.rst,:doc:`/$1`,g;
 
-				my @matches = $desc =~ m,Documentation/ABI/([\w\/\-]+),;
+				my @matches = $desc =~ m,Documentation/ABI/([\w\/\-]+),g;
 				foreach my $f (@matches) {
 					my $xref = $f;
 					my $path = $f;