Remove header tag from leadin

The leading doesn't need to appear like a header, in fact it looks junky on the www2 site when rendered as such.

pages/password-special-characters.md

@@ -8,7 +8,7 @@ permalink: /password-special-characters
 
 ---
 
-## Password special characters is a selection of punctuation characters that are present on standard US keyboard and frequently used in passwords.
+Password special characters is a selection of punctuation characters that are present on standard US keyboard and frequently used in passwords.
 
 | Character | Name | Unicode
 | :---: | :---: | :---: |
@@ -50,4 +50,4 @@ The same list as string (between double quotes): <code>" !"#$%&'()*+,-./:;&lt;=&
 
 Various operating systems and applications may apply limitations to this set:
 
-* [Oracle Identity Manager and Microsoft Active Directory](http://docs.oracle.com/cd/E11223_01/doc.904/e10429/app_special_char.htm)
+* [Oracle Identity Manager and Microsoft Active Directory](http://docs.oracle.com/cd/E11223_01/doc.904/e10429/app_special_char.htm)