chore: fix some instances of bad wording

Co-authored-by: inclusive-coding-bot <inclusive-coding-bot@github.com>

plugins/sprunge/README.md

@@ -18,7 +18,8 @@ plugins=(... sprunge)
 | `echo data \| sprunge`       | Any piped data will be uploaded           |
 
 Once sprunge has processed the input it will give you a unique HTTP address:
-```
+
+```console
 $ sprunge "hello"
 http://sprunge.us/XxjnKz
 ```
@@ -30,3 +31,8 @@ http://sprunge.us/XxjnKz
 - Argument precedence goes as follows: stdin > piped input > text strings.
 - If a filename is misspelled or doesn't have the necessary path description, it will NOT
   generate an error, but instead treat it as a text string.
+
+## Credits
+
+- Original code: [shellperson.net](https://web.archive.org/web/20190601000000*/https://www.shellperson.net/sprunge-pastebin-script/).
+- Adapted by: Matt Parnell (@ilikenwf).

plugins/sprunge/sprunge.plugin.zsh

@@ -1,7 +1,3 @@
-# Contributed and SLIGHTLY modded by Matt Parnell/ilikenwf <parwok -at- gmail>
-# Created by the blogger at the URL below...I don't know where to find his/her name
-# Original found at https://www.shellperson.net/sprunge-pastebin-script/
-
 sprunge() {
   if [[ "$1" = --help ]]; then
     fmt -s >&2 << EOF

plugins/svn-fast-info/README.md

@@ -9,7 +9,7 @@ To use it, add `svn-fast-info` to the plugins array in your zshrc file:
 plugins=(... svn-fast-info)
 ```
 
-It's faster because his efficient use of svn (single svn call) which saves a lot on a huge codebase
+It's faster because it has an efficient use of svn (single svn call) which saves a lot on a huge codebase.
 It displays the current status of the local files (added, deleted, modified, replaced, or else...)
 
 Use `svn_prompt_info` method to display the svn repository status in your theme.

plugins/zsh-navigation-tools/README.md

@@ -226,7 +226,7 @@ Zsh plugins may look scary, as they seem to have some "architecture". In fact, w
 1. It has its directory added to `fpath`
 2. It has any first `*.plugin.zsh` file sourced
 
-That's it. When one contributes to Oh-My-Zsh or creates a plugin for any plugin manager, he only needs to account for this.
+That's it. When one contributes to Oh-My-Zsh or creates a plugin for any plugin manager, they only need to account for this.
 The same with doing any non-typical Zsh Navigation Tools installation.
 
 ## More