Add Antigravity configuration example (#1531)

Added configuration example for Antigravity in mcp.md.

Co-authored-by: Marcos Sevilla <31174242+marcossevilla@users.noreply.github.com>

Author: yuruyuri16

site/docs/commands/mcp.md

@@ -96,6 +96,22 @@ Add to `.vscode/mcp.json`:
 
 Add to `~/.windsurf/mcp.json`:
 
+```json
+{
+  "mcpServers": {
+    "very_good_cli": {
+      "command": "very_good",
+      "args": ["mcp"]
+    }
+  }
+}
+```
+
+  </TabItem>
+  <TabItem value="antigravity" label="Antigravity">
+
+Add to `~/.gemini/antigravity/mcp_config.json`:
+
 ```json
 {
   "mcpServers": {