doc: remove uneeded \n in android's compile.sh script

Bash 4.3 prints a literal \n , and POSIX does not define the behaviour.

Tuleap: #247
Change-Id: If58523b62fd6b013b72146ff52d15530b559d5dc

compile.sh

@@ -13,7 +13,7 @@ set -e
 
 if [ -z "$ANDROID_NDK" -o -z "$ANDROID_SDK" ]; then
    echo "You must define ANDROID_NDK, ANDROID_SDK and ANDROID_ABI before starting."
-   echo "They must point to your NDK and SDK directories.\n"
+   echo "They must point to your NDK and SDK directories."
    exit 1
 fi