Minor corrections to TBAA metadata docs <NFC>

[rehana]

Summary

Minor corrections have been made to the TBAA metadata documentation in LangRef.rst.

[kosarev]

docs/LangRef.rst

4663

Good catch. There's another patch, D40975, that inherited this typo. Will update it respectively. Thanks.

[Jim]

Could you plan to commit this change?

docs/LangRef.rst

4681

Don't delete blank line here.

[rehana]

In D41209#1781112, @Jim wrote:

Could you plan to commit this change?

one of the fixes (for L4663) is already committed. I do not have write permission to commit the other one. I was hoping both of them will be committed by D40975.

docs/LangRef.rst

struct Outer {
       float f;  // offset 0
       double d; // offset 4
       struct Inner inner_a;  // offset 12
     };
 
     void f(struct Outer* outer, struct Inner* inner, float* f, int* i, char* c) {
       outer->f = 0;            // tag0: (OuterStructTy, FloatScalarTy, 0)
       outer->inner_a.i = 0;    // tag1: (OuterStructTy, IntScalarTy, 12)
-      outer->inner_a.f = 0.0;  // tag2: (OuterStructTy, IntScalarTy, 16)
+      outer->inner_a.f = 0.0;  // tag2: (OuterStructTy, FloatScalarTy, 16)
       *f = 0.0;                // tag3: (FloatScalarTy, FloatScalarTy, 0)
     }
 
 is (note that in C and C++, ``char`` can be used to access any arbitrary
 type):
 
 .. code-block:: text
 
     Root = "TBAA Root"
     CharScalarTy = ("char", Root, 0)
     FloatScalarTy = ("float", CharScalarTy, 0)
     DoubleScalarTy = ("double", CharScalarTy, 0)
     IntScalarTy = ("int", CharScalarTy, 0)
-    InnerStructTy = {"Inner" (IntScalarTy, 0), (FloatScalarTy, 4)}
+    InnerStructTy = {"Inner", (IntScalarTy, 0), (FloatScalarTy, 4)}
     OuterStructTy = {"Outer", (FloatScalarTy, 0), (DoubleScalarTy, 4),
                      (InnerStructTy, 12)}
 
-
 with (e.g.) ``ImmediateParent(OuterStructTy, 12)`` = ``(InnerStructTy,
 0)``, ``ImmediateParent(InnerStructTy, 0)`` = ``(IntScalarTy, 0)``, and
 ``ImmediateParent(IntScalarTy, 0)`` = ``(CharScalarTy, 0)``.
 
 .. _tbaa_node_representation:
 
 Representation
 """"""""""""""