Fix typo

Doc/lib/xmldom.tex

@@ -808,7 +808,7 @@ readonly attribute string someValue;
          attribute string anotherValue;
 \end{verbatim}
 
-yeilds three accessor functions:  a ``get'' method for
+yields three accessor functions:  a ``get'' method for
 \member{someValue} (\method{_get_someValue()}), and ``get'' and
 ``set'' methods for
 \member{anotherValue} (\method{_get_anotherValue()} and

Doc/ref/ref2.tex

@@ -260,7 +260,7 @@ identifiers.  They must be spelled exactly as written here:%
 and       del       for       is        raise    
 assert    elif      from      lambda    return   
 break     else      global    not       try      
-class     except    if        or        yeild    
+class     except    if        or        yield    
 continue  exec      import    pass      while
 def       finally   in        print              
 \end{verbatim}