fix: Removed extra slash in URI (#253)

Fixed wrong URI

Author: fabriziofiorucci

content/nim/nginx-app-protect/setup-waf-config-management.md

@@ -252,7 +252,7 @@ You will need to use your NGINX repo certificates to setup automatic retrieval o
     <summary>Example request</summary>
 
     ```shell
-    curl -X POST 'https://{{NMS_FQDN}}//api/platform/v1/certs'  \
+    curl -X POST 'https://{{NMS_FQDN}}/api/platform/v1/certs'  \
         --header "Authorization: Bearer <access token>"      \
         --header "Content-Type: application/json"                \
         -d@nginx-repo-certs.json
@@ -372,7 +372,7 @@ You will need to use the [Instance Manager REST API]({{< relref "/nim/fundamenta
 <summary>Attack Signatures Example</summary>
 
 ```shell
-curl -X POST 'https://{{NMS_FQDN}}//api/platform/v1/security/attack-signatures' \
+curl -X POST 'https://{{NMS_FQDN}}/api/platform/v1/security/attack-signatures' \
     --header "Authorization: Bearer <access token>"      \
     --form 'revisionTimestamp="2022.11.16"'                 \
     --form 'filename=@"/attack-signatures.tgz"'
@@ -384,7 +384,7 @@ curl -X POST 'https://{{NMS_FQDN}}//api/platform/v1/security/attack-signatures'
 <summary>Threat Campaigns Example</summary>
 
 ```shell
-curl -X POST 'https://{{NMS_FQDN}}//api/platform/v1/security/threat-campaigns' \
+curl -X POST 'https://{{NMS_FQDN}}/api/platform/v1/security/threat-campaigns' \
     --header "Authorization: Bearer <access token>"      \
     --form 'revisionTimestamp="2022.11.15"'                 \
     --form 'filename=@"/threat-campaigns.tgz"'