Link to HTTPS urls in contrib comments/maintainers

Updates comments and dockerfile maintainer lines
to use HTTPS urls where applicable.

Signed-off-by: Eric Windisch <eric@windisch.us>

contrib/check-config.sh

@@ -27,7 +27,7 @@ is_set() {
 	zgrep "CONFIG_$1=[y|m]" "$CONFIG" > /dev/null
 }
 
-# see http://en.wikipedia.org/wiki/ANSI_escape_code#Colors
+# see https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
 declare -A colors=(
 	[black]=30
 	[red]=31

contrib/project-stats.sh

@@ -3,7 +3,7 @@
 ## Run this script from the root of the docker repository
 ## to query project stats useful to the maintainers.
 ## You will need to install `pulls` and `issues` from
-## http://github.com/crosbymichael/pulls
+## https://github.com/crosbymichael/pulls
 
 set -e
 

contrib/syntax/vim/doc/dockerfile.txt

@@ -1,6 +1,6 @@
 *dockerfile.txt*  Syntax highlighting for Dockerfiles
 
-Author: Honza Pokorny <http://honza.ca>
+Author: Honza Pokorny <https://honza.ca>
 License: BSD
 
 INSTALLATION                                                     *installation*

contrib/syntax/vim/syntax/dockerfile.vim

@@ -1,5 +1,5 @@
 " dockerfile.vim - Syntax highlighting for Dockerfiles
-" Maintainer:   Honza Pokorny <http://honza.ca>
+" Maintainer:   Honza Pokorny <https://honza.ca>
 " Version:      0.5