[fix] disable debug in settings.yml by default

debug was accidentally enabled in commit cbc08fd

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

searx/settings.yml

@@ -1,5 +1,5 @@
 general:
-    debug : True # Debug mode, only for development
+    debug : False # Debug mode, only for development
     instance_name : "searx" # displayed name
 
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