docs: add baseUrl to example tsconfig (facebook#7884)

Foosballfan · web-flow · commit 01ac2e0fcacc · 2022-08-03T18:25:53.000+08:00
tsconfig requires compiler options with base url 

Without base url, TS errors appear such as `Cannot find module '@site/src/components/...`
diff --git a/website/docs/typescript-support.md b/website/docs/typescript-support.md
@@ -28,7 +28,10 @@ Then add `tsconfig.json` to your project root with the following content:
 
 ```json title="tsconfig.json"
 {
-  "extends": "@tsconfig/docusaurus/tsconfig.json"
+  "extends": "@tsconfig/docusaurus/tsconfig.json",
+  "compilerOptions": {
+    "baseUrl": "."
+  }
 }
 ```
 

Original file line number	Diff line number	Diff line change
@@ -28,7 +28,10 @@ Then add `tsconfig.json` to your project root with the following content:
`28`	`28`
`29`	`29`	```json title="tsconfig.json"
`30`	`30`	`{`
`31`		`- "extends": "@tsconfig/docusaurus/tsconfig.json"`
	`31`	`+ "extends": "@tsconfig/docusaurus/tsconfig.json",`
	`32`	`+ "compilerOptions": {`
	`33`	`+ "baseUrl": "."`
	`34`	`+ }`
`32`	`35`	`}`
`33`	`36`	```
`34`	`37`