docs: update route callback type for java (#5324)

docs/src/api/class-browsercontext.md

@@ -596,10 +596,17 @@ Enabling routing disables http cache.
 A glob pattern, regex pattern or predicate receiving [URL] to match while routing.
 
 ### param: BrowserContext.route.handler
+* langs: js, python
 - `handler` <[function]\([Route], [Request]\)>
 
 handler function to route the request.
 
+### param: BrowserContext.route.handler
+* langs: csharp, java
+- `handler` <[function]\([Route]\)>
+
+handler function to route the request.
+
 ## method: BrowserContext.setDefaultNavigationTimeout
 
 This setting will change the default maximum navigation time for the following methods and related shortcuts:
@@ -735,10 +742,17 @@ A glob pattern, regex pattern or predicate receiving [URL] used to register a ro
 [`method: BrowserContext.route`].
 
 ### param: BrowserContext.unroute.handler
+* langs: js, python
 - `handler` <[function]\([Route], [Request]\)>
 
 Optional handler function used to register a routing with [`method: BrowserContext.route`].
 
+### param: BrowserContext.unroute.handler
+* langs: csharp, java
+- `handler` <[function]\([Route]\)>
+
+Optional handler function used to register a routing with [`method: BrowserContext.route`].
+
 ## async method: BrowserContext.waitForEvent
 * langs: csharp, js, python
   - alias-python: expect_event

docs/src/api/class-page.md

@@ -1817,10 +1817,17 @@ Enabling routing disables http cache.
 A glob pattern, regex pattern or predicate receiving [URL] to match while routing.
 
 ### param: Page.route.handler
+* langs: js, python
 - `handler` <[function]\([Route], [Request]\)>
 
 handler function to route the request.
 
+### param: Page.route.handler
+* langs: csharp, java
+- `handler` <[function]\([Route]\)>
+
+handler function to route the request.
+
 ## async method: Page.screenshot
 - returns: <[Buffer]>
 
@@ -2154,10 +2161,17 @@ the [`param: url`].
 A glob pattern, regex pattern or predicate receiving [URL] to match while routing.
 
 ### param: Page.unroute.handler
+* langs: js, python
 - `handler` <[function]\([Route], [Request]\)>
 
 Optional handler function to route the request.
 
+### param: Page.unroute.handler
+* langs: csharp, java
+- `handler` <[function]\([Route]\)>
+
+Optional handler function to route the request.
+
 ## method: Page.url
 - returns: <[string]>