Docs: removing stray pivotal reference
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- <a href="/docs/600/common/gpdb-features.html">Pivotal Greenplum&reg; 6.0.0 Documentation</a>
+ <a href="/docs/600/common/gpdb-features.html">Greenplum Database 6.0.0 Documentation</a>
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<a href="/docs/600/admin_guide/admin_guide.html">Administrator Guide</a>
