Update README.md

Author: bnasslahsen

README.md

@@ -31,9 +31,9 @@ Gradle Groovy DSL
 
 ```groovy
 plugins {
-      id("org.springframework.boot") version "2.2.4.RELEASE"
+      id "org.springframework.boot" version "2.2.4.RELEASE"
       id "com.github.johnrengelman.processes" version "0.5.0"
-      id("org.springdoc.openapi-gradle-plugin") version "1.2.0"
+      id "org.springdoc.openapi-gradle-plugin" version "1.2.0"
 }
 ```