[SDFAB-601] Add chassis config guide

Change-Id: Ibbf6689c45efc1a128d5057c7e0993dea4a263cf
diff --git a/conf.py b/conf.py
index 55466cb..ec932a7 100644
--- a/conf.py
+++ b/conf.py
@@ -248,6 +248,10 @@
 linkcheck_timeout = 3
 linkcheck_retries = 2
 
+linkcheck_anchors_ignore = [
+    r"L\d+" # Ignore line anchors from GitHub.
+]
+
 # -- options for Intersphinx extension ---------------------------------------
 
 intersphinx_mapping = {