Updated test cases documentation

docs/test_cases/t00054.md

@@ -31,43 +31,29 @@ File t00054.cc
 ```cpp
 namespace clanguml {
 namespace t00054 {
-struct a {
-};
-struct b {
-};
+struct a { };
+struct b { };
 
 namespace detail {
-struct c {
-};
-struct d {
-};
-struct e {
-};
+struct c { };
+struct d { };
+struct e { };
 } // namespace detail
-struct f {
-};
-struct g {
-};
+struct f { };
+struct g { };
 
-struct A {
-};
-struct B {
-};
+struct A { };
+struct B { };
 
 namespace detail2 {
-struct C {
-};
+struct C { };
 namespace detail3 {
-struct D {
-};
-struct E {
-};
+struct D { };
+struct E { };
 } // namespace detail3
-struct F {
-};
+struct F { };
 } // namespace detail2
-struct G {
-};
+struct G { };
 
 namespace detail4 {
 enum class h { hhh };