crossgcc/buildgcc: Add missing quotation mark

Change-Id: I5c20fd7057751a912aa2b2118dc5610c1ef647dc
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/14039
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 67ff1b6..f88c09c 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -344,7 +344,7 @@
 	printf "    [-S|--scripting]              build scripting support for GDB\n\n"
 	printf "Platforms for GCC & GDB:\n"
 	printf "    x86_64 i386-elf i386-mingw32 mipsel-elf riscv-elf arm aarch64\n"
-	printf "    powerpc64le-linux-gnu nds32le-elf\n\n
+	printf "    powerpc64le-linux-gnu nds32le-elf\n\n"
 }
 
 printversion() {