Update conf_extlinks.py

Author: rly

docs/conf_extlinks.py

@@ -1,6 +1,6 @@
 # Use this for mapping to external links
 extlinks = {
-    "linux-latest": ("https://github.com/neurodatawithoutborders/nwb-guide/tree/linux-latest/%s", "%s"),
+    "linux-dev": ("https://github.com/neurodatawithoutborders/nwb-guide/tree/linux-dev/%s", "%s"),
     "releases": ("https://github.com/NeurodataWithoutBorders/nwb-guide/releases/%s", "%s"),
     "pynwb-docs": ("https://pynwb.readthedocs.io/en/stable/%s", "%s"),
     "matnwb-src": ("https://github.com/NeurodataWithoutBorders/matnwb/%s", "%s"),