Update debug.md

Author: claire-chan

indepth/troubleshooting/debug.md

@@ -53,8 +53,8 @@ Afterwards, please send the dump files to [Dynamsoft Support Team]({{site.about}
 
 * dss.log --> For Dynamsoft Service
 * nw.log --> Details about the network traffic
-* wts.log --> For the client part of Dynamic Web TWAIN HTMl5 edition
-* wtss.log --> For the server part of Dynamic Web TWAIN HTMl5 edition
+* wts.log --> For the client part of Dynamic Web TWAIN HTML5 edition
+* wtss.log --> For the server part of Dynamic Web TWAIN HTML5 edition
 
 ### Q: What info do we see if Dynamic Web TWAIN SDK is not doing anything?