fix: restore EPISODIC strategy to configuration.md

The revert of the CUSTOM strategy commit inadvertently removed the
EPISODIC row from the Memory Strategies table in configuration.md.

Author: aidandaly24

docs/configuration.md

@@ -239,11 +239,12 @@ on the next deployment.
 
 ### Memory Strategies
 
-| Strategy          | Description                                         |
-| ----------------- | --------------------------------------------------- |
-| `SEMANTIC`        | Vector-based similarity search for relevant context |
-| `SUMMARIZATION`   | Compressed conversation history                     |
-| `USER_PREFERENCE` | Store user-specific preferences and settings        |
+| Strategy          | Description                                            |
+| ----------------- | ------------------------------------------------------ |
+| `SEMANTIC`        | Vector-based similarity search for relevant context    |
+| `SUMMARIZATION`   | Compressed conversation history                        |
+| `USER_PREFERENCE` | Store user-specific preferences and settings           |
+| `EPISODIC`        | Capture and reflect on meaningful interaction episodes |
 
 Strategy configuration: