Add missing dependency in docs generation

Reactor Netty and Spring WebFlux were missing.

spring-boot-docs/pom.xml

@@ -172,6 +172,11 @@
 			<artifactId>metrics-core</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>io.projectreactor.ipc</groupId>
+			<artifactId>reactor-netty</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>io.undertow</groupId>
 			<artifactId>undertow-servlet</artifactId>
@@ -538,6 +543,11 @@
 			<artifactId>spring-web</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-webfux</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-webmvc</artifactId>