Update to patient-history.html (#473)

Have updated the description of what you see in vaccination history
from:

"This shows NHS vaccinations given in England. Currently it includes
COVID-19, flu, MMR, and RSV, plus some pertussis and pneumococcal
vaccination records."

To:
"This shows NHS vaccinations given in England. Currently it includes
COVID-19, flu and RSV, plus some pertussis, pneumococcal and MMR
vaccination records."

We've made this change because MMR records from GPs do not currently
show in the history. The only MMR records you might see will be for MMR
vaccinations recorded in RAVS.

Author: Anna-Sutton

app/views/record-vaccinations/patient-history.html

@@ -94,7 +94,7 @@ <h1 class="nhsuk-heading-l">Check {{ data.patientName }}’s details and vaccina
 
       <h2 class="nhsuk-heading-m">Vaccination history</h2>
 
-      <p>This shows NHS vaccinations given in England. Currently it includes COVID-19, flu, MMR and RSV, plus some pertussis and pneumococcal vaccination records.</p>
+      <p>This shows NHS vaccinations given in England. Currently it includes COVID-19, flu and RSV, plus some pertussis, pneumococcal and MMR vaccination records.</p>
 
       {{ warningCallout({
         heading: "Important",