Remove concatination from the builder, it's now the duty of the internal method

src/org/org_builder.nim

@@ -8,12 +8,19 @@ type OrgBuilder* = Builder[OrgBuilderT]
 type OrgBuilderResult* = BuilderResult[OrgBuilderT]
 
 func makeOrgBuilderToken*(kind: orgElementKind): string -> OrgBuilderT =
+
+func textTokenizer*(kind: orgElementKind): seq[ParserToken] -> seq[OrgBuilderT] =
+  return func(tokens: seq[ParserToken]): seq[OrgBuilderT] =
+    return @[
+      OrgBuilderT(
+        kind: kind,
+        content: tokens.tokensToString(),
+      )
+    ]
+
+func rawTextTokenizer*(kind: orgElementKind): string -> OrgBuilderT =
   return func(content: string): OrgBuilderT =
     return OrgBuilderT(
-      kind: orgRawText,
+      kind: kind,
       content: content,
     )
-
-proc mergeOrgTokens*(tokenizer: string -> OrgBuilderT): (seq[ParserToken], seq[OrgBuilderT]) -> seq[OrgBuilderT] =
-  return proc(parserTokens: seq[ParserToken], builderTokens: seq[OrgBuilderT]): seq[OrgBuilderT] =
-    return builderTokens & tokenizer(parserTokens.tokensToString())