Add links to CertificateSigningRequest API

Signed-off-by: Craig Rodrigues <[email protected]>

Author: rodrigc

content/en/docs/reference/access-authn-authz/certificate-signing-requests.md

@@ -31,14 +31,16 @@ There is also experimental (alpha) support for distributing [trust bundles](#clu
 {{< feature-state for_k8s_version="v1.19" state="stable" >}}
 
 
-A CertificateSigningRequest (CSR) resource is used to request that a certificate be signed
+A [CertificateSigningRequest](/docs/reference/kubernetes-api/authentication-resources/certificate-signing-request-v1/)
+(CSR) resource is used to request that a certificate be signed
 by a denoted signer, after which the request may be approved or denied before
 finally being signed.
 
 
 ### Request signing process
 
-The CertificateSigningRequest resource type allows a client to ask for an X.509 certificate
+The [CertificateSigningRequest](/docs/reference/kubernetes-api/authentication-resources/certificate-signing-request-v1/)
+resource type allows a client to ask for an X.509 certificate
 be issued, based on a signing request.
 The CertificateSigningRequest object includes a PEM-encoded PKCS#10 signing request in
 the `spec.request` field. The CertificateSigningRequest denotes the signer (the
@@ -285,7 +287,8 @@ Non-PEM content may appear before or after the CERTIFICATE PEM blocks and is unv
 to allow for explanatory text as described in [section 5.2 of RFC7468](https://www.rfc-editor.org/rfc/rfc7468#section-5.2).
 
 When encoded in JSON or YAML, this field is base-64 encoded.
-A CertificateSigningRequest containing the example certificate above would look like this:
+A [CertificateSigningRequest](/docs/reference/kubernetes-api/authentication-resources/certificate-signing-request-v1/)
+containing the example certificate above would look like this:
 
 ```yaml
 apiVersion: certificates.k8s.io/v1
@@ -505,7 +508,9 @@ openssl req -new -key myuser.key -out myuser.csr -subj "/CN=myuser"
 
 ### Create a CertificateSigningRequest {#create-certificatessigningrequest}
 
-Create a CertificateSigningRequest and submit it to a Kubernetes Cluster via kubectl. Below is a script to generate the CertificateSigningRequest.
+Create a [CertificateSigningRequest](/docs/reference/kubernetes-api/authentication-resources/certificate-signing-request-v1/)
+and submit it to a Kubernetes Cluster via kubectl. Below is a script to generate the
+[CertificateSigningRequest](/docs/reference/kubernetes-api/authentication-resources/certificate-signing-request-v1/).
 
 ```shell
 cat <<EOF | kubectl apply -f -