fix: revert linter changes (#3447)
fix: revert linter changes (#3447)

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  - `Fix` - bug fixes

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<hr>

**1. Because:**
Recent erb-linter changes caused some styles to be removed/changed.

**2. This PR:**
* Restores missing styles
* Restores styles changed erroneously


**3. Additional Information:**
Linter errors related to these three lines are being thrown, but I
believe it is a linter configuration error.

Below was the output from the linter on my local lint run, which relate
one to one to the lines that are being restored in this PR:
```bash
(19:06) crespire@dev-vm:~/repos/the_odin_project/theodinproject (fix/revert_styles) $ bundle exec erblint --lint-all
Linting 77 files with 13 linters...

expected whitespace, '>' or '=' after attribute name (at ")
In file: app/views/courses/_course.html.erb:20

expected space after attribute value (at u)
In file: app/views/courses/_course.html.erb:23

expected '>' after '/' (at 7)
In file: app/views/courses/_course.html.erb:23

expected space after attribute value (at d)
In file: app/views/courses/_course.html.erb:32

expected '>' after '/' (at 9)
In file: app/views/courses/_course.html.erb:32

Non-whitespace character(s) detected: "c".
In file: app/views/courses/_course.html.erb:20

No space detected where there should be a single space.
In file: app/views/courses/_course.html.erb:20

No space detected where there should be a single space.
In file: app/views/courses/_course.html.erb:23

Non-whitespace character(s) detected: "/".
In file: app/views/courses/_course.html.erb:23

No space detected where there should be a single space.
In file: app/views/courses/_course.html.erb:32

Non-whitespace character(s) detected: "/".
In file: app/views/courses/_course.html.erb:32

11 error(s) were found in ERB files
```
TheOdinProject/theodinproject,TheOdinProject/theodinproject,TheOdinProject/theodinproject,TheOdinProject/theodinproject