Replace Tomcat6 URL for SSL Guide to Tomcat 10

[b12f10w]

I suggest SSL setup guide link from tomcat6 to tomcat10.
Tomcat 6 document for ssl (SSL is changed by SSL/TLS in tomcat 7,8,9,10 server document) is old.
So, I create pull request.

Also, I think it would better add xsd format in .ignore, So I suggest this file.

Regards.

[pivotal-issuemaster]

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[jzheaux]

Hi, @b12f10w, thanks for the suggestion and the PR.

I've left some feedback inline.

[jzheaux]

Since Spring Boot requires a minimum of Tomcat 9, I think it's best to point to the Tomcat 9. Would you please update this accordingly?

[b12f10w]

I understand your comments. I will change this point.
Thank you.

[b12f10w]

I completed fix my pull request as your comment.
Thanks.

[jzheaux]

Please leave this out of this PR. I'm thinking that we don't want to ignore .xsd files since we've got some in the repo, but if you feel like this change is necessary, please open a separate ticket.

[b12f10w]

I understand your comments.
I will follow your comments.
Thank you.

[b12f10w]

I completed cancel my commit as your comment.
Thanks.

[jzheaux]

Thanks, @b12f10w! This is now merged into master.