Fix minor documentation errors Fix typos, remove excess header underlines, and remove trailing whitespace. [ghudson@mit.edu: squashed several commits, summarized commit messages] (cherry picked from commit 4ad099d28437b542b76053f44f18f763bdcd5152) https://github.com/krb5/krb5/commit/2c31abee54d193a007d2f170d6b6746ce277146f Author: Michael Mattioli Committer: Tom Yu Commit: 2c31abee54d193a007d2f170d6b6746ce277146f Branch: krb5-1.13 doc/appdev/refs/index.rst | 2 +- doc/kadmin/README | 20 ++++++++++---------- doc/plugindev/hostrealm.rst | 2 +- doc/tools/README | 5 +---- 4 files changed, 13 insertions(+), 16 deletions(-)