ci: fix readthedocs extensions issue (#1201)

cmaureir · web-flow · commit 0e5f4b6bb5a5 · 2021-01-11T13:24:47.000Z
Closes #1200
diff --git a/conf.py b/conf.py
@@ -69,10 +69,16 @@
      _stdauthor, 'manual'),
 ]
 
-extensions.extend([
-    'sphinx_tabs.tabs',
-    'sphinxemoji.sphinxemoji',
-])
+try:
+    extensions.extend([
+        'sphinx_tabs.tabs',
+        'sphinxemoji.sphinxemoji',
+    ])
+except NameError:
+    extensions = [
+        'sphinx_tabs.tabs',
+        'sphinxemoji.sphinxemoji',
+    ]
 
 
 def setup(app):
