Updated the bundle install and uninstall articles for Symfony 4#8617

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javiereguiluz wants to merge 2 commits intosymfony:masterfrom

javiereguiluz:bundle_install_remove

Commits on Nov 10, 2017

Updated the bundle install and uninstall articles for Symfony 4
javiereguiluz
committed

Commits on Nov 11, 2017

Fixed a RST syntax issue
javiereguiluz
committed