Fix color name

Author: matklad

editors/code/package.json

@@ -312,7 +312,7 @@
         ],
         "colors": [
             {
-                "id": "rust-analyzer.inlayHint",
+                "id": "rust_analyzer.inlayHint",
                 "description": "Color for inlay hints",
                 "defaults": {
                     "dark": "#A0A0A0F0",

editors/code/src/inlay_hints.ts

@@ -36,7 +36,7 @@ interface InlayHint {
 
 const typeHintDecorationType = vscode.window.createTextEditorDecorationType({
     after: {
-        color: new vscode.ThemeColor('rust-analyzer.inlayHint'),
+        color: new vscode.ThemeColor('rust_analyzer.inlayHint'),
     },
 });