Incorporate review suggestions

Co-authored-by: Ashley Davis <[email protected]>
Signed-off-by: Yuedong Wu <[email protected]>

Author: lunarwhite

content/docs/reference/annotations.md

@@ -27,17 +27,17 @@ This is useful for keeping compatibility with the `ingress-gce` component.
 ## acme.cert-manager.io/http01-ingress-class
 - [Ingress](../usage/ingress.md)
 
-this annotation allows you to configure the `kubernetes.io/ingress.class` that will be
-used to solve challenges for this ingress. Customizing this is useful when you are trying
+Allows the `kubernetes.io/ingress.class` annotation to be configured.
+Customizing this is useful when you are trying
 to secure internal services, and need to solve challenges using a different ingress class
 to that of the ingress. If not specified and the `acme-http01-edit-in-place` annotation is
 not set, this defaults to the `http01.ingress.class` defined in the Issuer resource.
 
 ## acme.cert-manager.io/http01-ingress-ingressclassname
 - [Ingress](../usage/ingress.md)
 
-this annotation allows you to configure the `spec.ingressClassName` that will be
-used to solve challenges for this ingress. Customizing this is useful when you are trying
+Allows the Ingress's `spec.ingressClassName` to be configured.
+Customizing this is useful when you are trying
 to secure internal services, and need to solve challenges using a different ingress class
 to that of the ingress. If not specified and the `acme-http01-edit-in-place` annotation is
 not set, this defaults to the `http01.ingress.ingressClassName` defined in the Issuer resource.