SOLR-16602: tweaks to package manager docs to make following along easier

[epugh]

https://issues.apache.org/jira/browse/SOLR-16602

Description

While trying to understand how PackageManager api works, I went through this page.

Solution

Fix some of the examples and make it easier to use the ref guide "copy" command.

Tests

manually built

[epugh]

I removed lots of $ from the bash commands, which solves the copy function, otherwise every copy and paste into a terminal would start with a $ that you have to remove! I wish Antora would just automtically prefix any bash commands in the UI with a $, but not have it in the copy version. Any ideas on how to make that happen @ctargett ??

[risdenk]

I wish Antora would just automtically prefix any bash commands in the UI with a

this isn't necessary. $ is just a terminal prompt display thing. Its not necessary and my terminal doesn't just have $ in the prompt. I'm all for removing the $ to make copy/paste work well.

[epugh]

I wish Antora would just automtically prefix any bash commands in the UI with a

this isn't necessary. $ is just a terminal prompt display thing. Its not necessary and my terminal doesn't just have $ in the prompt. I'm all for removing the $ to make copy/paste work well.

Cool, I created https://issues.apache.org/jira/browse/SOLR-16610 to track this.