fix: Link to IPR details not history in email

Fixes ietf-tools#5251

ietf/templates/ipr/posted_document_email.txt

@@ -6,7 +6,7 @@ Cc: {{ cc_email }}
 Dear {{ to_name }}:
 
 {% filter wordwrap:78 %}
-An IPR disclosure that pertains to your {{ doc_info }} was submitted to the IETF Secretariat on {{ ipr.get_latest_event_submitted.time|date:"Y-m-d" }} and has been posted on the "IETF Page of Intellectual Property Rights Disclosures" ({{ settings.IDTRACKER_BASE_URL }}{% url "ietf.ipr.views.history" id=ipr.pk %}). The title of the IPR disclosure is "{{ ipr.title }}"
+An IPR disclosure that pertains to your {{ doc_info }} was submitted to the IETF Secretariat on {{ ipr.get_latest_event_submitted.time|date:"Y-m-d" }} and has been posted on the "IETF Page of Intellectual Property Rights Disclosures" ({{ settings.IDTRACKER_BASE_URL }}{% url "ietf.ipr.views.show" id=ipr.pk %}). The title of the IPR disclosure is "{{ ipr.title }}"
 {% endfilter %}
 
 Thank you