docs(matrix-sdk): Clarify that an in-memory store will be used

Author: poljar

crates/matrix-sdk/src/config/client.rs

@@ -130,8 +130,8 @@ impl ClientConfig {
     /// In the default configuration, and if the corresponding features
     /// (`sled_state_store` and `sled_cryptostore`) are enabled, the client will
     /// open default implementations for the crypto store and the state store.
-    /// It will use the given path to open the stores. If no path is provided no
-    /// store will be opened
+    /// It will use the given path to open the stores. If no path is provided an
+    /// in-memory store will be opened.
     #[must_use]
     pub fn store_path(mut self, path: impl AsRef<Path>) -> Self {
         self.base_config = self.base_config.store_path(path);