[LangRef] Correct value ranges for address space, vector, and float bit sizes.

[hliao]

Summary

• The current implementation checks them for 24-bit inegers but the document says 23-bit one effectively by listing the range as [1,2^23).
• Minor error message correction.

[arsenm]

llvm/lib/IR/DataLayout.cpp

308

probably should have test coverage for this

574

probably should have test coverage for this