update STAC reference (#1005)

Signed-off-by: Emmanuel Ferdman <[email protected]>

Author: emmanuel-ferdman

docs/src/examples/notebooks/Working_with_STAC.ipynb

@@ -29,7 +29,7 @@
     "\n",
     "# TiTiler: STAC + COG\n",
     "\n",
-    "Docs: https://github.com/developmentseed/titiler/blob/main/docs/endpoints/stac.md\n",
+    "Docs: https://github.com/developmentseed/titiler/blob/main/docs/src/endpoints/stac.md\n",
     "\n",
     "\n",
     "TiTiler was first designed to work with single COG by passing the file URL to the tiler.\n",