fix(sdk): removing deprecating param from our sdk and docs changes with it (#4740)

docs/migration/oss-to-platform.mdx

@@ -81,6 +81,10 @@ client = MemoryClient(api_key="m0-...")
   **Critical Change**: Platform uses v2 endpoints that require filtering parameters to be nested inside a `filters` dictionary.
 </Warning>
 
+<Note>
+  The `limit` parameter has been removed in favor of `top_k` across all SDKs. Update any code using `limit=` to use `top_k=` instead.
+</Note>
+
 | Method | Open Source | Platform |
 | ------ | ----------- | -------- |
 | `search()` | `m.search(query, user_id="alex")` | `client.search(query, filters={"user_id": "alex"})` |
@@ -121,18 +125,18 @@ Note: `add()` and `delete()` methods remain unchanged. The `update()` method is
     <CodeGroup>
     ```python Open Source (Old)
     # Get all memories for a user
-    memories = m.get_all(user_id="alex", limit=10)
+    memories = m.get_all(user_id="alex", top_k=10)
 
     # Get memories with pagination
-    memories = m.get_all(user_id="alex", limit=5, offset=10)
+    memories = m.get_all(user_id="alex", top_k=5, offset=10)
     ```
 
     ```python Platform (New)
     # Get all memories for a user
-    memories = client.get_all(filters={"user_id": "alex"}, limit=10)
+    memories = client.get_all(filters={"user_id": "alex"}, top_k=10)
 
     # Get memories with pagination
-    memories = client.get_all(filters={"user_id": "alex"}, limit=5, offset=10)
+    memories = client.get_all(filters={"user_id": "alex"}, top_k=5, offset=10)
     ```
     </CodeGroup>
   </Accordion>
@@ -283,7 +287,7 @@ The Platform introduces powerful capabilities not available in OSS:
         "user preferences",
         filters={"user_id": "alex"},
         rerank=True,  # Platform exclusive
-        limit=5
+        top_k=5
     )
 
     # Search with keyword expansion
@@ -335,7 +339,7 @@ The Platform introduces powerful capabilities not available in OSS:
                 {"timestamp": {"gte": "2024-01-01"}}
             ]
         },
-        limit=100
+        top_k=100
     )
 
     # Monitor usage patterns