CI: fix grammar typo when test is succesful

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

.github/workflows/entrypoint.sh

@@ -26,7 +26,7 @@ for PKG in /ci/*.ipk; do
 	if [ -f "$TEST_SCRIPT" ]; then
 		echo "Use package specific test.sh"
 		if sh "$TEST_SCRIPT" "$PKG_NAME" "$PKG_VERSION"; then
-			echo "Test successfull"
+			echo "Test succesful"
 		else
 			echo "Test failed"
 			exit 1