Misspeling (#1313)

external-argo-cd was misspelled in 3 locations (missing 'o')

Author: lrochette

_docs/installation/gitops/runtime-argocd-admin-api-token.md

@@ -122,7 +122,7 @@ OR
 
 ```yaml
 global:
-  external-arg-cd:
+  external-argo-cd:
     auth:
       type: token
       tokenSecretKeyRef:
@@ -148,7 +148,7 @@ OR
 ##### Example username and password as plain text 
 ```yaml
 global:
-  external-arg-cd:
+  external-argo-cd:
     auth:
       type: password
       username: "user-name"
@@ -158,7 +158,7 @@ global:
 ##### Example username as plain text and password as secret reference
 ```yaml
 global:
-  external-arg-cd:
+  external-argo-cd:
     auth:
       type: password
       username: "some-user-name"
@@ -167,4 +167,4 @@ global:
         key: "secret-key"
 ```
 ## Related articles
-[Install GitOps Runtime with existing Argo CD]({{site.baseurl}}/docs/installation/gitops/runtime-install-with-existing-argo-cd/)  
+[Install GitOps Runtime with existing Argo CD]({{site.baseurl}}/docs/installation/gitops/runtime-install-with-existing-argo-cd/)