Remove namespaces, fix std::array missing size

Based on comments from r/cpp

Author: legends2k

README.md

@@ -63,3 +63,8 @@ Append this to your Emacs configuration
 * Edit `cpp-params-refcard.org`
 * Save
 * Export <kbd>C-c C-e l o</kbd>
+
+# To Do
+
+* Add horizontal rules between sections
+* Use _mononoki_ font for monospace using `fontspec` package

cpp_param_ref.org

@@ -195,12 +195,12 @@ Returning value (both move and copy) will lead to deep copy for [[https://stacko
 #+BEGIN_SRC c++
 // example
 // a move-unfriendly type (has no freestore data members)
-struct doc::Properties {
-  Point                 origin;
-  float                 size_x, size_y;
-  std::array<Margin>    margin_sizes;
+struct Properties {
+  Point                  origin;
+  float                  size_x, size_y;
+  std::array<Margin, 4>  margin_sizes;
 };
-void Deduce(doc::Properties& p) {
+void Deduce(Properties& p) {
 }
 #+END_SRC