Fix title glitch in release-notes script

sys/release-notes.sh

@@ -40,8 +40,7 @@ if [ ! -s .l ]; then
 fi
 grep ^Author .l | cut -d : -f 2- | sed -e 's,radare,pancake,' | sort -u > .A
 
-echo "Release Notes"
-echo "-------------"
+echo "## Release Notes"
 echo
 echo "Version: ${VERS}"
 echo "Previous: ${PREV}"
@@ -49,19 +48,17 @@ printf "Commits: "
 grep ^commit .l | wc -l | xargs echo
 echo "Contributors: `wc -l .A | awk '{print $1}'`"
 echo
-echo "Highlights"
-echo "----------"
+echo "## Highlights"
 
 echo "<details><summary>More details</summary><p>"
-echo "Authors"
-echo "-------"
+echo
+echo "## Authors"
 echo
 cat .A | perl -ne '/([^<]+)(.*)$/;$a=$1;$b=$2;$a=~s/^\s+|\s+$//g;$b=~s/[<>\s]//g;print "[$a](mailto:$b) "'
 echo
 echo
 
-echo "Changes"
-echo "-------"
+echo "## Changes"
 echo
 cat .l | grep -v ^commit | grep -v ^Author | grep -v ^Date > .x
 cat .x | grep '##' | perl -ne '/##([^ ]*)/; if ($1) {print "$1\n";}' | sort -u > .y
@@ -73,8 +70,7 @@ for a in `cat .y` ; do
 done
 
 if [ -n "`echo $@ | grep -- -v`" ]; then
-	echo "To Review"
-	echo "---------"
+	echo "## To Review"
 	cat .x | grep -v '##' | sed -e 's,^ *,,g' | grep -v "^$" | \
 	      perl -ne 'if (/^\*/) { print "$_"; } else { print "* $_";}'
 	echo