Merge pull request #3745 from manu-silicon/docs

Ensure proper spelling of COMPlus_xxx environment variables

diff --cc src/jit/codegenarm64.cpp
Simple merge

diff --cc src/jit/compiler.cpp
Simple merge

diff --cc src/jit/compiler.h
Simple merge

diff --cc src/jit/flowgraph.cpp
Simple merge

diff --cc src/jit/jitconfigvalues.h
Simple merge