[FIX] sale_quotation_builder: Update template header message

Update header message to match changes in the following commit:
https://github.com/odoo/odoo/commit/8ba6e3b0c3bf856308b4d58158392d0e99d2b58e



opw-2631125

closes odoo/odoo#76748

Signed-off-by: bon-odoo <nboulif@users.noreply.github.com>

addons/sale_quotation_builder/i18n/sale_quotation_builder.pot

@@ -226,8 +226,8 @@ msgstr ""
 
 #. module: sale_quotation_builder
 #: model_terms:ir.ui.view,arch_db:sale_quotation_builder.so_template
-msgid "Titles with style <i>Heading 1</i> and\n"
-"                                    <i>Heading 2</i> will be used to generate the\n"
+msgid "Titles with style <i>Heading 2</i> and\n"
+"                                    <i>Heading 3</i> will be used to generate the\n"
 "                                    table of content automatically."
 msgstr ""
 

addons/sale_quotation_builder/views/sale_portal_templates.xml

@@ -41,8 +41,8 @@
                                     template.
                                 </p>
                                 <p class="text-muted">
-                                    Titles with style <i>Heading 1</i> and
-                                    <i>Heading 2</i> will be used to generate the
+                                    Titles with style <i>Heading 2</i> and
+                                    <i>Heading 3</i> will be used to generate the
                                     table of content automatically.
                                 </p>
                             </div>