JAL-3337 adjusted building doc as sourceDist uses gradle 5.2 or above properties

diff --git a/doc/building.md b/doc/building.md
index cc3d7f2..5f5fa6d 100644 (file)
--- a/doc/building.md
+++ b/doc/building.md
@@ -24,7 +24,7 @@ java -jar getdown-launcher.jar . jalview
 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.
 
 * Java 11 compliant JDK
-* gradle 5.1 or above
+* gradle 5.2 or above
 * git
 
 > The versions and installation methods here are just suggestions (which we have tested