Fix typo in configure script

Author: bnoordhuis

configure

@@ -2,7 +2,7 @@
 
 # v8 doesn't like ccache
 if [ ! -z "`echo $CC | grep ccache`" ]; then
-  echo "Error: V8 doesn't like cache. Please set your CC env var to 'gcc'"
+  echo "Error: V8 doesn't like ccache. Please set your CC env var to 'gcc'"
   echo "  (ba)sh: export CC=gcc"
   exit 1
 fi