Fix mune translation from ini (run/pause) buttion
add s to "Read Framebuffer To Memory (CPU)", "Read Framebuffer To Memory (GPU)" in rc

Unified two keys:
"Read Framebuffer To Memory (CPU)", "Read Framebuffer To Memory (GPU)"
as  "Read Framebuffers To Memory (CPU)" and "Read Framebuffers To Memory
(GPU)"
used in ini file.
Merge pull request #3509 from kaienfr/ppsspp_fix_translation_1

Fix mune translation from ini (run/pause) button translation