Add OpenID Connect provider name.

providers/oidc.go

@@ -17,6 +17,7 @@ type OIDCProvider struct {
 }
 
 func NewOIDCProvider(p *ProviderData) *OIDCProvider {
+	p.ProviderName = "OpenID Connect"
 	return &OIDCProvider{ProviderData: p}
 }
 

templates.go

@@ -115,7 +115,7 @@ func getTemplates() *template.Template {
 	{{ if .SignInMessage }}
 	<p>{{.SignInMessage}}</p>
 	{{ end}}
-	<button type="submit" class="btn">Sign in with a {{.ProviderName}} Account</button><br/>
+	<button type="submit" class="btn">Sign in with {{.ProviderName}}</button><br/>
 	</form>
 	</div>