docs(plugin-vue): mark script/template/style options as Partial (#1342) [skip ci]

Author: underfin

packages/plugin-vue/README.md

@@ -22,9 +22,9 @@ export interface Options {
   isProduction?: boolean
 
   // options to pass on to @vue/compiler-sfc
-  script?: SFCScriptCompileOptions
-  template?: SFCTemplateCompileOptions
-  style?: SFCStyleCompileOptions
+  script?: Partial<SFCScriptCompileOptions>
+  template?: Partial<SFCTemplateCompileOptions>
+  style?: Partial<SFCStyleCompileOptions>
 }
 ```