JAL-4192 minimal specification of gradle version in building.md

diff --git a/doc/building.md b/doc/building.md
index aee827d..bbcc011 100644 (file)
--- a/doc/building.md
+++ b/doc/building.md
@@ -23,10 +23,10 @@ java -jar getdown-launcher.jar . jalview
 
 > To get set up using _only_ the Eclipse IDE (<https://www.eclipse.org/>) then please see the section [Setting up in Eclipse IDE](#setting-up-in-eclipse-ide) 
 
-The method here is described in terms of using a command line.  You can easily do this on linux or in a Terminal window in macOS.  You can do it in Windows.
+The method here is described assumes using a command line.  You can easily do this on linux or in a Terminal window in macOS.  You can do it in Windows.
 
 * Java 11 compliant JDK
-* gradle 5.2 or above *(NB gradle 6.6 and above currently produces NullPointerExceptions during the build. This is non-fatal and does not affect the build. Use gradle 6.5.1 to avoid this)*
+* gradle 7.6.3 or above, but not gradle 8 
 * git
 
 > The versions and installation methods here are just suggestions (which we have tested