Switch greater blocks to using name provided when building exit matcher instead of from context.

src/parser/parser_context.rs

@@ -110,10 +110,9 @@ impl<'r, 's> ContextTree<'r, 's> {
 pub enum ContextElement<'r, 's> {
     /// Stores a parser that indicates that children should exit upon matching an exit matcher.
     ExitMatcherNode(ExitMatcherNode<'r>),
-    Context(&'r str),
 
-    /// Stores the name of the greater block.
-    GreaterBlock(&'s str),
+    /// Stores the name of the current element to prevent directly nesting elements of the same type.
+    Context(&'r str),
 
     /// Indicates if elements should consume the whitespace after them.
     ConsumeTrailingWhitespace(bool),