readme: improve release docs a bit

Author: cirosantilli

README.adoc

@@ -581,6 +581,8 @@ To try an older prebuilt:
 
 then do whatever that checked out README says.
 
+If you are curious to see what the releases contain in detail, have a look at our <<release,release procedure>>.
+
 ////
 For gem5, do:
 
@@ -10960,7 +10962,7 @@ cd linux-kernel-module-cheat-release
 ./release
 ....
 
-Source: link:release[].
+Source: link:release[]
 
 This scripts does: