Rename RecommendedPackageVersions to RecommendedPackages

A 'RecommendedPackageVersions' option doesn't exist in tor. However, it *does*
have RecommendedPackages...

  feature: https://gitweb.torproject.org/tor.git/commit/?id=c83d8381
  man addition: https://gitweb.torproject.org/tor.git/commit/?id=ddfdeb56

doc/tor.1.txt

@@ -2001,7 +2001,7 @@ on the public Tor network.
     multiple times: the values from multiple lines are spliced together. When
     this is set then **VersioningAuthoritativeDirectory** should be set too.
 
-[[RecommendedPackageVersions]] **RecommendedPackageVersions** __PACKAGENAME__ __VERSION__ __URL__ __DIGESTTYPE__**=**__DIGEST__ ::
+[[RecommendedPackages]] **RecommendedPackages** __PACKAGENAME__ __VERSION__ __URL__ __DIGESTTYPE__**=**__DIGEST__ ::
     Adds "package" line to the directory authority's vote.  This information
     is used to vote on the correct URL and digest for the released versions
     of different Tor-related packages, so that the consensus can certify