config: disable search summaries by default

After a search, the Sphinx client-side JS can retrieve a snippet of text to
display for each result, by making a network request for each item.

doc/sphinxdoc/conf.py

@@ -116,6 +116,10 @@
 # a list of builtin themes.
 html_theme = 'sphinxdoc_mtg'
 
+# If true, the text around the keyword is shown as summary of each search result.
+# Default is True.
+html_show_search_summary = False
+
 # Add any paths that contain custom themes here, relative to this directory.
 html_theme_path = ['_templates']