Updated test cases documentation

docs/test_cases/t00033.md

@@ -0,0 +1,52 @@
+# t00033 - Nested template instantiation dependency test case
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t00033_class:
+    type: class
+    glob:
+      - ../../tests/t00033/t00033.cc
+    using_namespace:
+      - clanguml::t00033
+    include:
+      namespaces:
+        - clanguml::t00033
+
+```
+## Source code
+File t00033.cc
+```cpp
+#include <memory>
+#include <vector>
+
+namespace clanguml {
+namespace t00033 {
+
+template <typename T> struct A {
+    T aaa;
+};
+
+template <typename T> struct B {
+    T bbb;
+};
+
+template <typename T> struct C {
+    T ccc;
+};
+
+struct D {
+    int ddd;
+};
+
+struct R {
+    A<B<C<D>>> abc;
+};
+
+} // namespace t00033
+} // namespace clanguml
+
+```
+## Generated UML diagrams
+![t00033_class](./t00033_class.png "Nested template instantiation dependency test case")