Update _Windows-Install-Prerequisites.rst (backport ros2#4732) (ros2#4733)

* Update _Windows-Install-Prerequisites.rst (ros2#4732)

The package list that users will need to download features "eigen-3.3.4.nupkg" when the file on that github page is called "eigen.3.3.4.nupkg"

Signed-off-by: Ethan Zapalac <[email protected]>
(cherry picked from commit e0f2f09)

# Conflicts:
#	source/Installation/_Windows-Install-Prerequisites.rst

* resolve conflict.

Signed-off-by: Tomoya.Fujita <[email protected]>

---------

Signed-off-by: Tomoya.Fujita <[email protected]>
Co-authored-by: Ethan Zapalac <[email protected]>
Co-authored-by: Tomoya.Fujita <[email protected]>

Author: 3 people

source/Installation/_Windows-Install-Prerequisites.rst

@@ -107,7 +107,7 @@ Please download these packages from `this <https://github.com/ros2/choco-package
 * asio.1.12.1.nupkg
 * bullet.3.17.nupkg
 * cunit.2.1.3.nupkg
-* eigen-3.3.4.nupkg
+* eigen.3.3.4.nupkg
 * tinyxml2.6.0.0.nupkg
 
 Once these packages are downloaded, open an administrative shell and execute the following command: