Update import_maps.md with another example for using absolute project…

… root imports

Since the Deno LSP provides incorrect recommendations for absolute project root imports when using the official example, I suggest adding another example to resolve this issue.

Reference issues:
- denoland/deno#19908
- denoland/deno#17193

runtime/manual/basics/import_maps.md

@@ -108,6 +108,18 @@ something like this:
 }
 ```
 
+Additional example if you use project root for absolute imports but want to get rid of the incorrect recommendation from LSP.
+You can move the following into scope:
+
+```json
+ "scopes": {
+ "./": {
+ "/": "./",
+ "./": "./"
+ }
+ }
+```
+
 ## Import Maps are for Applications
 
 It is important to note that import map configuration files are