[docs] Add @Ribbit to video_core/ and shader_recompiler/ CODEOWNERS (#2892)

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2892
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

docs/CODEOWNERS

@@ -21,7 +21,8 @@ src/core             @Lizzie @Maufeat @PavelBARABANOV @MrPurple666 @JPikachu
 src/core/hle            @Maufeat @PavelBARABANOV @SDK-Chan
 src/core/arm            @Lizzie @MrPurple666
 src/*_room              @AleksandrPopovich
-src/video_core       @CamilleLaVey @MaranBr @Wildcard @weakboson
+src/video_core          @CamilleLaVey @MaranBr @Wildcard @weakboson @Ribbit
+src/shader_recompiler   @Ribbit
 
 # Global owners/triage
 *                       @CamilleLaVey @Maufeat @crueter @MrPurple666 @MaranBr @Lizzie