Update core/audits/has-hsts.js

Co-authored-by: Adam Raine <[email protected]>

core/audits/has-hsts.js

@@ -21,7 +21,7 @@ const UIStrings = {
   /** Summary text for the results of a Lighthouse audit that evaluates the HSTS header. This is displayed if the preload directive is missing. "HSTS" stands for "HTTP Strict Transport Security". */
   noPreload: 'No `preload` directive found',
   /** Summary text for the results of a Lighthouse audit that evaluates the HSTS header. This is displayed if the includeSubDomains directive is missing. "HSTS" stands for "HTTP Strict Transport Security". */
-  noSubdomain: 'No includeSubDomains directive found',
+  noSubdomain: 'No `includeSubDomains` directive found',
   /** Summary text for the results of a Lighthouse audit that evaluates the HSTS header. This is displayed if the max-age directive is missing. "HSTS" stands for "HTTP Strict Transport Security". */
   noMaxAge: 'No max-age directive',
   /** Summary text for the results of a Lighthouse audit that evaluates the HSTS header. This is displayed if the provided duration for the max-age directive is too low. "HSTS" stands for "HTTP Strict Transport Security". */