docs: simplify grep
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@@ -140,7 +140,7 @@
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<p class="line">
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<span class="path"></span>
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<span class="prompt">$</span>
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<span class="command">echo "trusty utopic vivid wily xenial yakkety zesty artful bionic" | grep -q "$OS_ID" || OS_ID="trusty"</span>
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<span class="command">echo "utopicvividwilyxenialyakketyzestyartfulbionic" | grep -q "$OS_ID" || OS_ID="trusty"</span>
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</p>
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<p class="line">
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<span class="path"></span>
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