Clean up deprecation warning in spring-test

Author: sbrannen

spring-test/src/main/java/org/springframework/mock/web/reactive/function/server/MockServerRequest.java

@@ -273,7 +273,7 @@ public interface Builder {
 		Builder session(WebSession session);
 
 		/**
-		 * @deprecated  in favor of {@link #principal(Principal)}
+		 * @deprecated in favor of {@link #principal(Principal)}
 		 */
 		@Deprecated
 		Builder session(Principal principal);
@@ -421,6 +421,7 @@ public Builder session(WebSession session) {
 		}
 
 		@Override
+		@Deprecated
 		public Builder session(Principal principal) {
 			return principal(principal);
 		}
@@ -542,5 +543,4 @@ public HttpHeaders getHeaders() {
 		}
 	}
 
-
 }