[fix] searx configuration - quote bash calls in sed replacements

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

docs/build-templates/searx.rst

@@ -134,8 +134,8 @@ ${fedora_build}
 
        $ sudo -H mkdir -p \"$(dirname ${SEARX_SETTINGS_PATH})\"
        $ sudo -H cp \"$SEARX_SRC/searx/settings.yml\" \"${SEARX_SETTINGS_PATH}\"
-       $ sudo -H sed -i -e \"s/ultrasecretkey/\\$(openssl rand -hex 16)/g\" \"$SEARX_SETTINGS_PATH\"
-       $ sudo -H sed -i -e \"s/{instance_name}/searx@\\$(uname -n)/g\" \"$SEARX_SETTINGS_PATH\"
+       $ sudo -H sed -i -e \"s/ultrasecretkey/\$(openssl rand -hex 16)/g\" \"$SEARX_SETTINGS_PATH\"
+       $ sudo -H sed -i -e \"s/{instance_name}/searx@\$(uname -n)/g\" \"$SEARX_SETTINGS_PATH\"
 
 .. END searx config