Add missing paren in "java -version" check

Change-Id: Id66e795423e8d25b48ac996956748a93060ea5db
diff --git a/core/main.mk b/core/main.mk
index 5494a73..cc57ae8 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -154,7 +154,7 @@
 $(info ************************************************************)
 $(info You are attempting to build with an unsupported JDK.)
 $(info $(space))
-$(info This build requires OpenJDK, but you are using:
+$(info This build requires OpenJDK, but you are using:)
 $(info $(shell java -version 2>&1 | head -n 2).)
 $(info Please follow the machine setup instructions at)
 $(info $(space)$(space)$(space)$(space)https://source.android.com/source/download.html)