general: Reformat documentation with better formatting and wording

General purpose reformating and rewording in (a few places). This should
also make markdown linting happier.

Prefer back-ticks wherever useful and use `console` for code blocks to
be executed on terminal.

Also, update references links wherever possible (including update from
'http://' to 'https://').

runcoms/README.md

@@ -1,34 +1,32 @@
-Configuration Files
-===================
+# Configuration Files
 
 Zsh has several system-wide and user-local configuration files.
 
 Prezto has one user-local configuration file.
 
 System-wide configuration files are installation-dependent but are installed
-in */etc* by default.
+in *`/etc`* by default.
 
 User-local configuration files have the same name as their global counterparts
 but are prefixed with a dot (hidden). Zsh looks for these files in the path
 stored in the `$ZDOTDIR` environment variable. However, if said variable is
 not defined, Zsh will use the user's home directory.
 
-File Descriptions
------------------
+## File Descriptions
 
 The configuration files are read in the following order:
 
-  01. /etc/zshenv
-  02. ~/.zshenv
-  03. /etc/zprofile
-  04. ~/.zprofile
-  05. /etc/zshrc
-  06. ~/.zshrc
-  07. ~/.zpreztorc
-  08. /etc/zlogin
-  09. ~/.zlogin
-  10. ~/.zlogout
-  11. /etc/zlogout
+01. */etc/zshenv*
+02. *~/.zshenv*
+03. */etc/zprofile*
+04. *~/.zprofile*
+05. */etc/zshrc*
+06. *~/.zshrc*
+07. *~/.zpreztorc*
+08. */etc/zlogin*
+09. *~/.zlogin*
+10. *~/.zlogout*
+11. */etc/zlogout*
 
 ### zshenv
 
@@ -37,16 +35,16 @@ small as possible and should only define environment variables.
 
 ### zprofile
 
-This file is similar to zlogin, but it is sourced before zshrc. It was added
-for [KornShell][1] fans. See the description of zlogin below for what it may
+This file is similar to *zlogin*, but it is sourced before *zshrc*. It was added
+for [KornShell][1] fans. See the description of *zlogin* below for what it may
 contain.
 
-zprofile and zlogin are not meant to be used concurrently but can be done so.
+*zprofile* and *zlogin* are not meant to be used together but can be done so.
 
 ### zshrc
 
-This file is sourced by interactive shells. It should define aliases,
-functions, shell options, and key bindings.
+This file is sourced by interactive shells. It should define aliases, functions,
+shell options, and key bindings.
 
 ### zpreztorc
 
@@ -54,9 +52,9 @@ This file configures Prezto.
 
 ### zlogin
 
-This file is sourced by login shells after zshrc, and thus, it should contain
+This file is sourced by login shells after *zshrc*. Thus, it should contain
 commands that need to execute at login. It is usually used for messages such as
-[fortune][2], [msgs][3], or for the creation of files.
+[*fortune*][2], [*msgs*][3], or for the creation of files.
 
 This is not the file to define aliases, functions, shell options, and key
 bindings. It should not change the shell environment.
@@ -64,16 +62,15 @@ bindings. It should not change the shell environment.
 ### zlogout
 
 This file is sourced by login shells during logout. It should be used for
-displaying messages and the deletion of files.
+displaying messages and for deletion of files.
 
-Authors
--------
+## Authors
 
 *The authors of these files should be contacted via the [issue tracker][4].*
 
-  - [Sorin Ionescu](https://github.com/sorin-ionescu)
+- [Sorin Ionescu](https://github.com/sorin-ionescu)
 
-[1]: http://www.kornshell.com
-[2]: http://en.wikipedia.org/wiki/Fortune_(Unix)
-[3]: http://www.manpagez.com/man/1/msgs
+[1]: https://www.kornshell.com
+[2]: https://en.wikipedia.org/wiki/Fortune_(Unix)
+[3]: https://www.manpagez.com/man/1/msgs
 [4]: https://github.com/sorin-ionescu/prezto/issues