[ORC][Kaleidoscope] Update ORCJit tutorial.

Summary: Fix a few typos and update names to match current source.

Differential Revision: https://reviews.llvm.org/D37948

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313473 91177308-0d34-0410-b5e6-96231b3b80d8

• docs/tutorial/BuildingAJIT1.rst[diff]
• docs/tutorial/BuildingAJIT2.rst[diff]
• docs/tutorial/BuildingAJIT3.rst[diff]
• docs/tutorial/BuildingAJIT4.rst[diff]
• docs/tutorial/BuildingAJIT5.rst[diff]