Possible misunderstanding in the keymap docs

[cychen2021]

Summary

The table in the goto mode section of the keymap docs may cause misunderstanding.

The <n> in the description column doesn't appear in the key column. This is a bit confusing. I spent some time figuring out how to jump to a specific line with a line number <n> by myself.

Maybe splitting this keymap into two rows is better:

Key	Description	Command
<n>g	Go to line number n	...
g	Go to the start of the file	...

[the-mikedavis]

gg needs a few sentences to explain properly: it's going to the start of the file if there is no count and to count's line number if there is a count. I think we could add a small section near the top (above the "Normal mode" section maybe) that explains the count with examples like 3w and 10gg/g10g. Then g in goto mode can point back to the docs on count.