Update .gitmodules

SkyFan2002 · Enet4 · web-flow · commit 47f31f4192a9 · 2023-04-30T19:00:55.000+08:00
Co-authored-by: Eduardo Pinho &lt;enet4mikeenet@gmail.com&gt;
diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "faiss-sys/faiss"]
 	path = faiss-sys/faiss
 	url = https://github.com/Enet4/faiss.git
+	branch = c_api_head
