Update GRADLE_OPTS to use " instead of '

gradlew.bat

@@ -10,7 +10,7 @@ if "%OS%"=="Windows_NT" setlocal
 
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 set DEFAULT_JVM_OPTS=-Xmx1024M
-set GRADLE_OPTS='-Dorg.gradle.daemon=false'
+set GRADLE_OPTS="-Dorg.gradle.daemon=false"
 
 set DIRNAME=%~dp0
 if "%DIRNAME%" == "" set DIRNAME=.