Corrected some typos in the sample queries. Thanks to Parker Jones for the bug report.
Corrected some typos in the sample queries. Thanks to Parker Jones for the bug report.

git-svn-id: 4c7b768bc2e2a56aa1c56b1b5a9454ba68342430@5352 ac9c905b-388a-4ddf-9b6a-4063a022bc57

LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2