Fix a typo in server_capabilities.experimental

Author: nemethf

crates/rust-analyzer/src/caps.rs

@@ -117,7 +117,7 @@ pub fn server_capabilities(config: &Config) -> ServerCapabilities {
             "hoverRange": true,
             "joinLines": true,
             "matchingBrace": true,
-            "moveItems": true,
+            "moveItem": true,
             "onEnter": true,
             "openCargoToml": true,
             "parentModule": true,