Use relative links that work locally and in production

At present, a mix of link types are used in the Netbox
documentation from markdown file links to relative and
absolute anchor links.

Of the three types, linking to markdown files is the
most ideal because it allows navigation locally on disk,
as well as being translated into working links at render
time.

While not obvious, mkdocs handles converting markdown
links to valid URLs.

Signed-Off-by: Marcus Crane <marcu.crane@daimler.com>

docs/additional-features/reports.md

@@ -12,7 +12,7 @@ A NetBox report is a mechanism for validating the integrity of data within NetBo
 
 ## Writing Reports
 
-Reports must be saved as files in the [`REPORTS_ROOT`](../../configuration/optional-settings/#reports_root) path (which defaults to `netbox/reports/`). Each file created within this path is considered a separate module. Each module holds one or more reports (Python classes), each of which performs a certain function. The logic of each report is broken into discrete test methods, each of which applies a small portion of the logic comprising the overall test.
+Reports must be saved as files in the [`REPORTS_ROOT`](../configuration/optional-settings.md#reports_root) path (which defaults to `netbox/reports/`). Each file created within this path is considered a separate module. Each module holds one or more reports (Python classes), each of which performs a certain function. The logic of each report is broken into discrete test methods, each of which applies a small portion of the logic comprising the overall test.
 
 !!! warning
     The reports path includes a file named `__init__.py`, which registers the path as a Python module. Do not delete this file.