Fixed more stx bugs in DTML ref.

lib/python/Products/OFSP/help/dtml-let.stx

@@ -4,8 +4,10 @@ let: Defines DTML variables
 
   Syntax
 
-    <dtml-let [Name=Variable][Name="Expression"]...>
-    </dtml-let>
+    'let' tag syntax::
+
+      <dtml-let [Name=Variable][Name="Expression"]...>
+      </dtml-let>
 
     The 'let' tag is a block tag. Variables are defined by tag
     arguments. Defined variables are pushed onto the DTML namespace

lib/python/Products/OFSP/help/dtml-sqlgroup.stx

@@ -30,7 +30,7 @@ sqlgroup: Formats complex SQL expressions
 
   Examples
 
-    Sample usage
+    Sample usage::
 
       select * from employees 
       <dtml-sqlgroup where>

lib/python/Products/OFSP/help/dtml-with.stx

@@ -5,8 +5,10 @@ with: Controls DTML variable look up
 
   Syntax
 
-    <dtml-with Variable|expr="Expression">
-    </dtml-with>
+    'with' tag syntax::
+
+      <dtml-with Variable|expr="Expression">
+      </dtml-with>
 
     The 'with' tag is a block tag. It pushes the named variable or
     variable expression onto the DTML namespace for the duration of