doctor: restore newlines between checks

Closes #18060.
libcec 2.1.1

Closes #18827.
Change github /tarball/ URLs to /archive/ for formulae L-Z

This takes care of a `brew audit` complaint.

Closes #18828.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
youtube-dl 2013.03.29

Closes #18829.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
direnv 0.1.154

Closes #18826.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Redis 2.6.12

Closes #18824.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
at-spi2-core 2.8.0
at-spi2-atk 2.8.0
gtk+3 3.8.0
Use each_key instead of keys.each
ACE 6.1.8

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
avro-c 1.7.4

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
avro-cpp 1.7.4

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
camlp5 6.08

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
cfengine 3.4.4

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
cfitsio 3.340

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
eprover 1.7

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
eet 1.7.5

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
hwloc 1.6.2

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
icalBuddy v1.8.7

Signed-off-by: Jack Nagel <jacknagel@gmail.com>