spelling correction (sync with 5x)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1457269 13f79535-47bb-0310-9956-ffa450edef68
spelling correction (sync with 5x)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1457270 13f79535-47bb-0310-9956-ffa450edef68