Docs: Update Acronyms.yml to include more acronyms

doc/.vale/gitlab/Acronyms.yml

@@ -23,6 +23,7 @@ exceptions:
   - AWS
   - BSD
   - CAS
+  - CDN
   - CLI
   - CNA
   - CNAME
@@ -48,10 +49,12 @@ exceptions:
   - EOL
   - EXIF
   - FAQ
+  - FIFO
   - FIPS
   - FOSS
   - FQDN
   - FREE
+  - FTP
   - GCP
   - GDK
   - GDPR
@@ -61,6 +64,7 @@ exceptions:
   - GNU
   - GPG
   - GPL
+  - GPU
   - GUI
   - HAML
   - HDD
@@ -94,11 +98,13 @@ exceptions:
   - MIT
   - MVC
   - NAT
+  - NDA
   - NFS
   - NGINX
   - NOTE
   - NTP
   - ONLY
+  - OSS
   - OWASP
   - PAT
   - PCI-DSS
@@ -108,8 +114,10 @@ exceptions:
   - PGP
   - PHP
   - PNG
+  - POSIX
   - POST
   - PUT
+  - RAID
   - RAM
   - RDP
   - REST
@@ -131,6 +139,7 @@ exceptions:
   - SDK
   - SELF
   - SEO
+  - SFTP
   - SHA
   - SLA
   - SMS
@@ -165,6 +174,7 @@ exceptions:
   - UUID
   - VCS
   - VPC
+  - VPN
   - WIP
   - WSL
   - XML

doc/user/project/clusters/serverless/index.md

@@ -15,7 +15,7 @@ Serverless is currently in [alpha](https://about.gitlab.com/handbook/product/git
 
 Serverless architectures offer Operators and Developers the ability write highly scalable applications without provisioning a single server.
 
-GitLab supports several ways deploy Serverless applications in both Kubernetes Environments and also major cloud FAAS environments.
+GitLab supports several ways deploy Serverless applications in both Kubernetes Environments and also major cloud Function as a Service (FaaS) environments.
 
 Currently we support:
 
@@ -35,7 +35,7 @@ of the box through its main components:
 
 For more information on Knative, visit the [Knative docs repository](https://github.com/knative/docs).
 
-With GitLab Serverless, you can deploy both functions-as-a-service (FaaS) and serverless applications.
+With GitLab Serverless, you can deploy both FaaS and serverless applications.
 
 ## Prerequisites