Drop unnecessary semicolons from includes in example.

[b4hand]

These semicolons are almost certainly harmless, but they are not idiomatic in C.

None of the real code appears to follow this convention of having semicolons after each #include, so it seemed strange for them to be included in the example code.

[geoffmcl]

@b4hand agree... good catch, and thanks...

Could I ask you do one more thing before I merge this PR, and that is to change the header name from <buffio.h> to the new correct name <tidybuffio.h> in the first example as it has already been done in the 2nd...

Of course there is the question why we have this example file twice, and several other files... I think we intended to drop the build/documentation folder in favor of the documentation folder, or something...

But I note that the build/documentation/README.md has lots more information than its counterpart, so some information should be moved before such a deletion...

And the CMakeLists.txt still refers to build/documentation/tidy1.xsl which is slightly different to its counterpart... will check these later...

If you could just add that header name change will merge the results... thanks...

[b4hand]

As requested, it now says #include <tidybuffio.h>.

[geoffmcl]

@b4hand now merged into master, and thanks...