[Connectors] Pager duty connector UI fix (elastic#174253)

## Summary

Small UI change as discussed [in
here](https://github.com/adcoelho/kibana/pull/new/swap-input-fields-pager-duty).

#### Before:
<img width="1175" alt="before"
src="https://github.com/elastic/kibana/assets/1533137/bcb01b5a-0892-4433-9f2b-5b5c401d5a2a">

#### After:
<img width="1172" alt="after"
src="https://github.com/elastic/kibana/assets/1533137/ac016699-97e6-47a3-b469-5dc3fe99afbd">

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

x-pack/plugins/stack_connectors/public/connector_types/pagerduty/links_list.tsx

@@ -62,9 +62,9 @@ export const LinksList: React.FC<LinksListProps> = ({
                 <EuiFlexItem>
                   <EuiFormRow
                     label={i18n.translate(
-                      'xpack.stackConnectors.components.pagerDuty.linkURLFieldLabel',
+                      'xpack.stackConnectors.components.pagerDuty.linkTextFieldLabel',
                       {
-                        defaultMessage: 'URL',
+                        defaultMessage: 'Label',
                       }
                     )}
                     fullWidth
@@ -73,21 +73,21 @@ export const LinksList: React.FC<LinksListProps> = ({
                       index={index}
                       editAction={(key, value, actionIndex) => {
                         const newLinks = [...links];
-                        newLinks[currentLinkIndex] = { text: link.text, href: value };
+                        newLinks[currentLinkIndex] = { href: link.href, text: value };
                         editAction('links', newLinks, actionIndex);
                       }}
                       messageVariables={messageVariables}
-                      paramsProperty={'linksHref'}
-                      inputTargetValue={link.href}
+                      paramsProperty={'linksText'}
+                      inputTargetValue={link.text}
                     />
                   </EuiFormRow>
                 </EuiFlexItem>
                 <EuiFlexItem>
                   <EuiFormRow
                     label={i18n.translate(
-                      'xpack.stackConnectors.components.pagerDuty.linkTextFieldLabel',
+                      'xpack.stackConnectors.components.pagerDuty.linkURLFieldLabel',
                       {
-                        defaultMessage: 'Label',
+                        defaultMessage: 'URL',
                       }
                     )}
                     fullWidth
@@ -96,12 +96,12 @@ export const LinksList: React.FC<LinksListProps> = ({
                       index={index}
                       editAction={(key, value, actionIndex) => {
                         const newLinks = [...links];
-                        newLinks[currentLinkIndex] = { href: link.href, text: value };
+                        newLinks[currentLinkIndex] = { text: link.text, href: value };
                         editAction('links', newLinks, actionIndex);
                       }}
                       messageVariables={messageVariables}
-                      paramsProperty={'linksText'}
-                      inputTargetValue={link.text}
+                      paramsProperty={'linksHref'}
+                      inputTargetValue={link.href}
                     />
                   </EuiFormRow>
                 </EuiFlexItem>