Fix typos and formatting in the http protocol docs

Also adjusted line numbers in scripting doc due to changes in http/main.bro

testing/btest/doc/sphinx/include-scripts_base_protocols_http_main_bro.btest

@@ -5,6 +5,7 @@ main.bro
 module HTTP;
 
 export {
-	## This setting changes if passwords used in Basic-Auth are captured or not.
+	## This setting changes if passwords used in Basic-Auth are captured or
+	## not.
 	const default_capture_password = F &redef;
 }