fix(wave5): Update Wave5 Multimedia Documentation

Generic edits to the Wave5 multimedia documentation that fixes up some
grammar and addresses changes in the new release.

Also add in the FFMPEG and MPV information into Wave5 file. These should
be subsections under multimedia components rather than separating them
into their own page.

Signed-off-by: Brandon Brnich <[email protected]>

Author: b-brnich

source/linux/Foundational_Components.rst

@@ -29,7 +29,6 @@ Foundational Components
    Foundational_Components_Graphics
    Foundational_Components_Multimedia_IVAHD
    Foundational_Components_Multimedia_D5520_VXE384
-   Foundational_Components_Multimedia_Other_Tools
    Foundational_Components_Multimedia_wave5
    Foundational_Components_OpenCL
    Foundational_Components_OpenCV