Update "pecl install" lines and add more explanation for why users should use explicit versions when installing from PECL
Update "pecl install" lines and add more explanation for why users should use explicit versions when installing from PECL

jetty-project/docker-docs,tilosp-docker/library-docs,docker-library/docs,docker-flink/docs,Bonitasoft-Community/docker_docs,avoinea/docs,Bonitasoft-Community/docker_docs,infosiftr/docker-library-docs,dinogun/docs,infosiftr/docker-library-docs,odoo/docker-docs,ceejatec/docs,tilosp-docker/library-docs,crate/docker-docs,docker-flink/docs,zendtech/docs,docker-solr/docs,Lightstreamer/docs,Lightstreamer/docs,docker-library/docs,dinogun/docs,zendtech/docs,31z4/docs,ceejatec/docs,docker-solr/docs,odoo/docker-docs,nats-io/docker-docs,crate/docker-docs,avoinea/docs,31z4/docs,nats-io/docker-docs,jetty-project/docker-docs