renamed files with an predeceding number - batch 1 - try 2

Signed-off-by: henkvancann <[email protected]>

specs.json

@@ -6,12 +6,12 @@
       "spec_directory": "./spec",
       "output_path": "./docs",
       "markdown_paths": [
-        "title.md", 
-        "header.md",
-        "toc.md",
-        "foreword.md",
-        "clauses.md",
-        "introduction.md",
+        "05_title.md", 
+        "10_header.md",
+        "13_toc.md",
+        "16_foreword.md",
+        "18_clauses.md",
+        "20_introduction.md",
         "scope.md",
         "design.md",
         "howto_define.md",