fix: Fix the error in the ChatMemory documentation regarding the example code for CassandraChatMemoryRepository. (#4476)

Fixes #4476

Signed-off-by: Sun Yuhan <[email protected]>
Co-authored-by: Sun Yuhan <[email protected]>
(cherry picked from commit 93cf476)

Author: sunyuhan1998

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat-memory.adoc

@@ -222,7 +222,7 @@ If you'd rather create the `CassandraChatMemoryRepository` manually, you can do
 [source,java]
 ----
 ChatMemoryRepository chatMemoryRepository = CassandraChatMemoryRepository
-    .create(CassandraChatMemoryConfig.builder().withCqlSession(cqlSession));
+    .create(CassandraChatMemoryRepositoryConfig.builder().withCqlSession(cqlSession));
 
 ChatMemory chatMemory = MessageWindowChatMemory.builder()
     .chatMemoryRepository(chatMemoryRepository)