document smart casing param

Author: devalog

fern/products/sdks/reference/generators-yml-reference.mdx

@@ -393,6 +393,7 @@ groups:
     generators:
       - name: fernapi/fern-typescript-node-sdk
         version: 0.9.0
+        smart-casing: true
 ```
 
 Individual generator settings within a group.
@@ -405,6 +406,14 @@ The Fern generator package name (e.g., fernapi/fern-typescript-node-sdk)
 Specific version of the generator to use
 </ParamField>
 
+<ParamField path="smart-casing" type="boolean" default="false">
+Enables intelligent case conversion that preserves numbers and common programming patterns:
+- Numbers stay intact (e.g., `v2` instead of `v_2`, `getUsersV2` instead of `getUsersV_2`)
+- Initialisms are preserved (e.g., `PreviousResponseID` instead of `PreviousResponseId`)
+- Acronyms remain correct (e.g., `HTTPSConnection` stays `HTTPSConnection`)
+</ParamField>
+
+
 #### output
 
 Configuration for where and how to publish the generated SDK