Update the Name Space Rules page examples to follow the coding standard

The examples in the 45_name_space_rules.md files doesn't follow the
coding standard in the following ways:

- Only use UEFI data types. Use of standard C data types is prohibited.
- Identifiers shall contain mixed upper- and lower-case text.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

4_naming_conventions/45_name_space_rules.md

@@ -53,9 +53,9 @@ tags may be reused only for union types.
 
 ```c
 typedef struct MyStruct {
-  int  one;
-  int  two;
-  int  three;
+  UINT32  One;
+  UINT32  Two;
+  UINT32  Three;
 } MY_STRUCT;
 ```
 
@@ -68,14 +68,14 @@ Exceptions are structure member and union member names.
 
 ```c
 typedef struct StructOne {
-  INT32             one;
-  INT16             two;
+  INT32             One;
+  INT16             Two;
   struct StructOne  *MySelf;
 } STRUCT_ONE;
 
 typedef struct StructTwo {
-  INT16             one;
-  INT8              *two;
+  INT16             One;
+  INT8              *Two;
   struct StructTwo  *MySelf;
 } STRUCT_TWO;