changed horizontal line structure which means that no unnecessary line is displayed if the delete button is missing

scm-plugins/scm-git-plugin/src/main/js/RepositoryConfig.js

@@ -121,6 +121,7 @@ class RepositoryConfig extends React.Component<Props, State> {
     if (!(loadingBranches || loadingDefaultBranch)) {
       return (
         <>
+          <hr />
           <Subtitle subtitle={t("scm-git-plugin.repo-config.title")}/>
           {this.renderBranchChangedNotification()}
           <form onSubmit={this.submit}>
@@ -133,7 +134,6 @@ class RepositoryConfig extends React.Component<Props, State> {
             />
             { submitButton }
           </form>
-          <hr />
         </>
       );
     } else {