remove * from first search example (#1461)
remove * from first search example (#1461)

both
`conan search 'Poco*' --remote=conan-center`
and 
`conan search Poco --remote=conan-center` 
work here, but the latter is more straight-forward and the page explains the Search command further later on
conan-io/docs,conan-io/docs,conan-io/docs,conan-io/docs