libtiff: doc: Use sphinx_rtd_theme

From 32f075901f87089ed4d537c252205ab90a54e0ca Mon Sep 17 00:00:00 2001
From: Roger Leigh <[EMAIL REDACTED]>
Date: Sat, 4 Jun 2022 21:52:33 +0100
Subject: [PATCH] doc: Use sphinx_rtd_theme

---
 doc/conf.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/conf.py b/doc/conf.py
index c25af8ac..11748d66 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -76,7 +76,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'bizstyle'
+html_theme = 'sphinx_rtd_theme'
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,