fix typo

MobileVLCKit/AggregateStaticPlugins.sh

@@ -24,7 +24,7 @@ VLC_BUILD_DIR="$VLC_SRC_DIR/build-ios-Simulator/$CURRENT_ARCH"
 VLC_INSTALL_DIR="$VLC_SRC_DIR/install-ios-Simulator/$CURRENT_ARCH"
 fi
 
-VLC_CONTRIB_DIR="$VLC_INSTAL_DIR/contribs/"
+VLC_CONTRIB_DIR="$VLC_INSTALL_DIR/contribs/"
 LDFLAGS=""
 
 echo "VLC_BUILD_DIR   = $VLC_BUILD_DIR"