DOC: Pin Sphinx less than version 6

Version 6 removed the logo, which sphinx-gallery is currently incompatible with.
SciTools · Jan 26, 2023 · 0989f7d · 0989f7d
1 parent a8f62ba
commit 0989f7d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/doc-requirements.txt b/docs/doc-requirements.txt
@@ -1,4 +1,4 @@
-sphinx
+sphinx<6
 sphinx-gallery
 beautifulsoup4
 pydata-sphinx-theme