Comment out Customer Showcase links in language-specific sections (#97)

Author: devalog

fern/products/sdks/sdks.yml

@@ -23,8 +23,8 @@ navigation:
             path: ./overview/typescript/publishing-to-npm.mdx
           - page: Adding custom code
             path: ./overview/typescript/custom-code.mdx
-          - link: Customer Showcase
-            href: https://buildwithfern.com/showcase
+        # - link: Customer Showcase
+        #   href: https://buildwithfern.com/showcase
       - section: Python
         contents:
           - page: Quickstart
@@ -39,8 +39,8 @@ navigation:
             path: ./overview/python/publishing-to-pypi.mdx
           - page: Adding custom code
             path: ./overview/python/custom-code.mdx  
-          - link: Customer Showcase
-            href: https://buildwithfern.com/showcase
+        # - link: Customer Showcase
+        #   href: https://buildwithfern.com/showcase
       - section: Go
         contents:
           - page: Quickstart
@@ -55,8 +55,8 @@ navigation:
             path: ./overview/go/publishing-to-go-package-manager.mdx
           - page: Adding custom code
             path: ./overview/go/custom-code.mdx  
-          - link: Customer Showcase
-            href: https://buildwithfern.com/showcase
+        # - link: Customer Showcase
+        #   href: https://buildwithfern.com/showcase
       - section: Java
         contents:
           - page: Quickstart
@@ -71,8 +71,8 @@ navigation:
             path: ./overview/java/publishing-to-maven-central.mdx
           - page: Adding custom code
             path: ./overview/java/custom-code.mdx
-          - link: Customer Showcase
-            href: https://buildwithfern.com/showcase
+        # - link: Customer Showcase
+        #   href: https://buildwithfern.com/showcase
       - section: .NET
         contents:
           - page: Quickstart
@@ -88,8 +88,8 @@ navigation:
           - page: Adding custom code
             hidden: true
             path: ./overview/dotnet/custom-code.mdx
-          - link: Customer Showcase
-            href: https://buildwithfern.com/showcase
+       #  - link: Customer Showcase
+        #   href: https://buildwithfern.com/showcase
       - section: PHP
         contents:
           - page: Quickstart
@@ -105,8 +105,8 @@ navigation:
           - page: Adding custom code
             hidden: true
             path: ./overview/php/custom-code.mdx
-          - link: Customer Showcase
-            href: https://buildwithfern.com/showcase
+        # - link: Customer Showcase
+        #   href: https://buildwithfern.com/showcase
       - section: Ruby
         contents:
           - page: Quickstart
@@ -122,8 +122,8 @@ navigation:
           - page: Adding custom code
             hidden: true
             path: ./overview/ruby/custom-code.mdx
-          - link: Customer Showcase
-            href: https://buildwithfern.com/showcase
+        # - link: Customer Showcase
+        #   href: https://buildwithfern.com/showcase
       - page: MCP Server
         path: ./overview/mcp-server/introduction.mdx
       - link: Request Rust