It is the first paragraph the gives you the correct understanding.

The start of the Mark section (few line before the line your quote) is:

Jumping to a mark can be done in two ways:
1. With ` (backtick):
   The cursor is positioned at the specified location
   and the motion is exclusive.
2. With ' (single quote):
   The cursor is positioned on the first non-blank
   character in the line of the specified location and
   the motion is linewise.

Unfortunately, you also need to read the context to have the right understanding of the doc.

It is the first paragraph that gives you the correct understanding.

The start of the Mark section (few lines before the lines you quote) is:

Jumping to a mark can be done in two ways:
1. With ` (backtick):
   The cursor is positioned at the specified location
   and the motion is exclusive.
2. With ' (single quote):
   The cursor is positioned on the first non-blank
   character in the line of the specified location and
   the motion is linewise.

Unfortunately, you also need to read the context to have the right understanding of the doc.