Merge branch 'bgi-5425-additional-provider' into 'main'

fix: Add additional_provider_filter to sample document upload request

See merge request business-gateway/documentation/developer-pack!12

Author: Emeli, Frank

_site/apis/send-a-document/1.0/technical-guide/index.html

@@ -315,9 +315,10 @@ <h3 class="govuk-heading-s" id="post-v1-documents-url-request" tabindex="-1" cla
 </button>
 <pre class="app-code app-code--block app-code__language--json" tabindex="0"><code><span class="app-code__punctuation">{</span>
   <span class="app-code__attr">&quot;data&quot;</span><span class="app-code__punctuation">:</span> <span class="app-code__punctuation">{</span>
-    <span class="app-code__attr">&quot;document_type&quot;</span><span class="app-code__punctuation">:</span> <span class="app-code__string">&quot;tr1&quot;</span><span class="app-code__punctuation">,</span>
+    <span class="app-code__attr">&quot;document_type&quot;</span><span class="app-code__punctuation">:</span> <span class="app-code__string">&quot;TR1&quot;</span><span class="app-code__punctuation">,</span>
     <span class="app-code__attr">&quot;file_length&quot;</span><span class="app-code__punctuation">:</span> <span class="app-code__number">6362</span><span class="app-code__punctuation">,</span>
-    <span class="app-code__attr">&quot;file_sha256&quot;</span><span class="app-code__punctuation">:</span> <span class="app-code__string">&quot;xhepsrlehdpshynpjwwarzerivlcpvn8f8pycs7crqa=&quot;</span>
+    <span class="app-code__attr">&quot;file_sha256&quot;</span><span class="app-code__punctuation">:</span> <span class="app-code__string">&quot;xhepsrlehdpshynpjwwarzerivlcpvn8f8pycs7crqa=&quot;</span><span class="app-code__punctuation">,</span>
+    <span class="app-code__attr">&quot;additional_provider_filter&quot;</span><span class="app-code__punctuation">:</span> <span class="app-code__string">&quot;123&quot;</span>
   <span class="app-code__punctuation">}</span>
 <span class="app-code__punctuation">}</span>
 </code></pre>