[Fix] Only use the default path for the Doc Site (#727)

## Summary
This PR adds the default path for building the site and deploying the
same using gh-pages.

Could you please review?

cc: @shimizust

<!---
## Details
fix for the site deployment issue.

## Testing Done
<!--- This is a required section; please describe how this change was
tested. --->

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Co-authored-by: Shao Tang <[email protected]>

Author: ParagEkbote

.gitignore

@@ -15,7 +15,7 @@ build/
 dist/
 
 # Doc Build
-doc_site/
+site/
 
 # Lockfiles
 uv.lock

Makefile

@@ -48,7 +48,7 @@ run-benchmarks:
 # MkDocs Configuration
 MKDOCS = mkdocs
 CONFIG_FILE = mkdocs.yml
-SITE_DIR = doc_site
+SITE_DIR = site
 
 # MkDocs targets