DOC: Update Download link in README

Update to docs.itk.org link. Remove trailing RTD for en/latest on
Documentation. Remove "Help" link wwith preference towards
"Documentation". Move the homebrew link to the Download page package
managers section.

Documentation/docs/download.md

@@ -98,6 +98,12 @@ ITK is available in [vcpkg] as `itk`:
 vcpkg install itk
 ```
 
+If you're a [Homebrew](https://brew.sh/) user, you can install [itk](https://formulae.brew.sh/formula/itk) via:
+
+```sh
+brew install itk
+```
+
 🚀 Latest sources with Git
 --------------------------
 

README.md

@@ -21,11 +21,10 @@ Links
 -----
 
 * [Homepage](https://itk.org)
-* [Download](https://itk.org/download/)
-* [Documentation](https://docs.itk.org/en/latest/)
+* [Download](https://docs.itk.org/en/latest/download.html)
+* [Documentation](https://docs.itk.org/)
 * [Discussion](https://discourse.itk.org/)
 * [Software Guide](https://itk.org/ItkSoftwareGuide.pdf)
-* [Help](https://itk.org/resources/)
 * [Examples](https://examples.itk.org/)
 * [Issue tracking](https://github.com/InsightSoftwareConsortium/ITK/issues)
 * [Submit a patch](CONTRIBUTING.md)
@@ -76,16 +75,9 @@ or
 conda install -c conda-forge itk
 ```
 
-If you're a [Homebrew](https://brew.sh/) user, you can install [itk](https://formulae.brew.sh/formula/itk) via:
-
-```sh
-brew install itk
-```
-
 The cross-platform, C++ core of the toolkit may be built from source using
 [CMake](https://cmake.org).
 
-
 Copyright
 ---------