fix db url in vs code task too

Author: david-crespo

.vscode/tasks.json

@@ -55,7 +55,7 @@
       "label": "Populate Nexus DB",
       "detail": "Do not use",
       "type": "shell",
-      "command": "cargo run --bin=omicron-dev -- db-populate --database-url postgresql://[email protected]:32221",
+      "command": "cargo run --bin=omicron-dev -- db-populate --database-url postgresql://[email protected]:32221/omicron",
       "options": {
         "cwd": "${workspaceFolder}/../omicron"
       },