Fix dynamic enum spelling in docs (#1986)

fix typos `dynmic enum` -> `dynamic enum` in dynamic types guide
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----

> [!IMPORTANT]
> Fix typo `dynmic enum` to `dynamic enum` in `dynamic-types.mdx`.
> 
>   - **Documentation**:
> - Fix typo `dynmic enum` to `dynamic enum` in `dynamic-types.mdx` at
lines 392, 416, and 440.
> 
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Author: ngirard

fern/01-guide/05-baml-advanced/dynamic-types.mdx

@@ -392,7 +392,7 @@ tb.add_baml("""
   }
 
   // Modifies the existing @@dynamic Category enum to add a new variant.
-  dynmic enum Category {
+  dynamic enum Category {
     VALUE5
   }
 """)
@@ -416,7 +416,7 @@ tb.addBaml(`
   }
 
   // Modifies the existing @@dynamic Category enum to add a new variant.
-  dynmic enum Category {
+  dynamic enum Category {
     VALUE5
   }
 `)
@@ -440,7 +440,7 @@ tb.add_baml("
   }
 
   // Modifies the existing @@dynamic Category enum to add a new variant.
-  dynmic enum Category {
+  dynamic enum Category {
     VALUE5
   }
 ")