Polish h2_rapid_reset docs

Author: nigoroll

include/tbl/params.h

@@ -1265,9 +1265,10 @@ PARAM_SIMPLE(
 	/* def */	"1.000",
 	/* units */	"seconds",
 	/* descr */
-       "The upper threshold for how rapid an http/2 RST has to come for "
-       "it to be treated as suspect and subjected to the rate limits "
-       "specified by h2_rapid_reset_limit and h2_rapid_reset_period.",
+	"The upper threshold for how rapid an http/2 RST has to come after "
+	"a HEADERS frame for it to be treated as suspect and subjected to "
+	"the rate limits specified by h2_rapid_reset_limit and "
+	"h2_rapid_reset_period.",
 	/* flags */	EXPERIMENTAL,
 )