docs: update docs link

SWHL · SWHL · commit c9a5fd8fd1f5 · 2025-06-20T09:18:23.000+08:00
diff --git a/docs/doc_whl_rapidocr_api.md b/docs/doc_whl_rapidocr_api.md
@@ -1 +1 @@
-### See [Documentation](https://rapidai.github.io/RapidOCRDocs/install_usage/rapidocr_api/usage/)
+### See [Documentation](https://rapidai.github.io/RapidOCRDocs/main/install_usage/rapidocr_api/usage/)

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-### See [Documentation](https://rapidai.github.io/RapidOCRDocs/install_usage/rapidocr_api/usage/)`
	`1`	`+### See [Documentation](https://rapidai.github.io/RapidOCRDocs/main/install_usage/rapidocr_api/usage/)`