Clarify that region/endpoint must be configured correctly for the bucket.

Suggested by Pritam Barhate.

doc/xml/release.xml

@@ -128,6 +128,16 @@
             </release-core-list>
 
             <release-doc-list>
+                <release-improvement-list>
+                    <release-item>
+                        <release-item-contributor-list>
+                            <release-item-ideator id="pritam.barhate"/>
+                        </release-item-contributor-list>
+
+                        <p>Clarify that region/endpoint must be configured correctly for the bucket.</p>
+                    </release-item>
+                </release-improvement-list>
+
                 <release-development-list>
                     <release-item>
                         <p>Pre-build containers for any <id>execute</id> elements marked <id>pre</id>.</p>
@@ -5975,6 +5985,11 @@
             <contributor-id type="github">nj3110</contributor-id>
         </contributor>
 
+        <contributor id="pritam.barhate">
+            <contributor-name-display>Pritam Barhate</contributor-name-display>
+            <contributor-id type="github">pritammobisoft</contributor-id>
+        </contributor>
+
         <contributor id="ronan.dunklau">
             <contributor-name-display>Ronan Dunklau</contributor-name-display>
             <contributor-id type="github">rdunklau</contributor-id>

doc/xml/user-guide.xml

@@ -1833,6 +1833,8 @@
             <backrest-config-option section="global" key="process-max">4</backrest-config-option>
         </backrest-config>
 
+        <p>Note that the region and endpoint will need to be configured to where the bucket is located.  The values given here are for the <id>us-east-1</id> region.</p>
+
         <p>A role should be created to run <backrest/> and the bucket permissions should be set as restrictively as possible.  This sample policy will restrict all reads and writes to the bucket and repository path.</p>
 
         <code-block title="Sample S3 Policy">