Updates after Hugo testing

404.md

@@ -7,7 +7,8 @@ search_omit: true
 permalink: /404.html
 ---  
 
-Sorry, but the page you were trying to find does not exist --- perhaps you can try searching for it below.
+Sorry, but the page you were trying to find does not exist. 
+Try searching for it below.
 
 <script type="text/javascript">
   var GOOG_FIXURL_LANG = 'en';

README.md

@@ -39,7 +39,7 @@ On macOS you need to install brew, bundler.io, and Ruby version manager so that
    $ echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.zshrc
    ```
 
-1. Source your `.bash_profile` file. If you are using macOS Catalina, your profile file may be `.zshrc`.
+1. Source your `.bash_profile` file. If you are using macOS Catalina or later, your profile file may be `.zshrc`.
 
    ```
    $ source ~/.bash_profile

_learn/03-hugo-go-netlify.md

@@ -69,13 +69,14 @@ For a Hugo static site, you can choose your specific theme after you create the
   ```
 1. To get the theme files in the `/themes` directory, and keep them updated, use a `git submodules` command to get the required theme files as well as keep them updated.
   ```
+  $ cd themes
   $ hugo mod init example.com
   ```
   The terminal returns something like this:
   ```
   go: creating new go.mod: module example.com
-  go: to add module requirements and sums:
-  go mod tidy
+  hugo: to add module requirements and sums:
+  hugo mod tidy
   ```
   Next, add the theme as a Git submodule with this command:
   ```