py2zope4: Correct invalid tal:block in ZPT

Require space just before 'i18n:translate', otherwise raising PTRuntimeError

bt5/erp5_corporate_identity/SkinTemplateItem/portal_skins/erp5_corporate_identity/Letter_createLetterFooter.zpt

@@ -131,7 +131,7 @@ Creates the Letter footer section.
 	                <span class="ci-letter-footer-title" i18n:translate="" i18n:domain="erp5_ui">BIC</span><span tal:content="letter_source_bic"></span>
                 </tal:block>
                 <tal:block tal:condition=letter_source_iban>
-	                <span class="ci-letter-footer-title"i18n:translate="" i18n:domain="erp5_ui">IBAN</span><span tal:content="letter_source_iban"></span>
+	                <span class="ci-letter-footer-title" i18n:translate="" i18n:domain="erp5_ui">IBAN</span><span tal:content="letter_source_iban"></span>
                 </tal:block>
                 <tal:block tal:condition=letter_source_vat>
                   <span class="ci-letter-footer-title" i18n:translate="" i18n:domain="erp5_ui">VAT ID</span><span tal:content="letter_source_vat"></span>
@@ -146,4 +146,4 @@ Creates the Letter footer section.
 	    </table>
 	  </div>
   </tal:block>
-</tal:block>
\ No newline at end of file
+</tal:block>