Fix incorrect CLI flags in subgraph prefixing (#685)

docs/federation/subgraph-prefixing.mdx

@@ -54,14 +54,14 @@ By default, the `subgraph.yaml` file is generated without any prefixes. You can
 
 This codemod will rename prefixes in already generated metadata. It can also be used to add or remove prefixes altogether.
 
-The `fromGraphqlRootField` prefix will be stripped if provided, and the new prefix, `graphqlRootField`, will be added. 
+The `--from-graphql-root-field` prefix will be stripped if provided, and the new prefix, `--graphql-root-field`, will be added. 
 If the new prefix is already present, it will not be reapplied.
 
 Examples:
 ```bash
 # Add root field and type name prefixes to the subgraph set in the context
-ddn codemod rename-graphql-prefixes --graphqlRootField 'app_' --graphqlTypeName 'App_'
+ddn codemod rename-graphql-prefixes --graphql-root-field 'app_' --graphql-type-name 'App_'
 
 # Change the root field prefix for the specified subgraph
-ddn codemod rename-graphql-prefixes --subgraph app/subgraph.yaml --fromGraphqlRootField 'app_' --graphqlRootField 'new_' 
-```
+ddn codemod rename-graphql-prefixes --subgraph app/subgraph.yaml --from-graphql-root-field 'app_' --graphql-root-field 'new_'
+```