add codestyle to some words

Author: wxsms

src/guide/typescript/options-api.md

@@ -6,7 +6,7 @@
 While Vue does support TypeScript usage with Options API, it is recommended to use Vue with TypeScript via Composition API as it offers simpler, more efficient and more robust type inference.
 :::
 
-## Typing Component Props
+## Typing Component `props`
 
 Type inference for props in Options API requires wrapping the component with `defineComponent()`. With it, Vue is able to infer the types for the props based on the `props` option, taking additional options such as `required: true` and `default` into account:
 
@@ -30,7 +30,7 @@ export default defineComponent({
 })
 ```
 
-However, the runtime props options only support using constructor functions as a prop's type - there is no way to specify complex types such as objects with nested properties or function call signatures.
+However, the runtime `props` options only support using constructor functions as a prop's type - there is no way to specify complex types such as objects with nested properties or function call signatures.
 
 To annotate complex props types, we can use the `PropType` utility type:
 
@@ -92,7 +92,7 @@ export default defineComponent({
 
 This prevents TypeScript from having to infer the type of `this` inside these functions, which, unfortunately, can cause the type inference to fail.
 
-## Typing Component Emits
+## Typing Component `emits`
 
 We can declare the expected payload type for an emitted event using the object syntax of the `emits` option. Also, all non-declared emitted events will throw a type error when called: