[guide] remove redundant spaces

Author: yuezk

README.md

@@ -3073,7 +3073,7 @@ Other Style Guides
   - [22.1](#coercion--explicit) Perform type coercion at the beginning of the statement.
 
   <a name="coercion--strings"></a><a name="21.2"></a>
-  - [22.2](#coercion--strings)  Strings: eslint: [`no-new-wrappers`](https://eslint.org/docs/rules/no-new-wrappers)
+  - [22.2](#coercion--strings) Strings: eslint: [`no-new-wrappers`](https://eslint.org/docs/rules/no-new-wrappers)
 
     ```javascript
     // => this.reviewScore = 9;
@@ -3360,7 +3360,7 @@ Other Style Guides
 
     > Why? This is an additional tool to assist in situations where the programmer would be unsure if a variable might ever change. UPPERCASE_VARIABLES are letting the programmer know that they can trust the variable (and its properties) not to change.
     - What about all `const` variables? - This is unnecessary, so uppercasing should not be used for constants within a file. It should be used for exported constants however.
-    - What about exported objects? - Uppercase at the top level of export  (e.g. `EXPORTED_OBJECT.key`) and maintain that all nested properties do not change.
+    - What about exported objects? - Uppercase at the top level of export (e.g. `EXPORTED_OBJECT.key`) and maintain that all nested properties do not change.
 
     ```javascript
     // bad
@@ -3467,7 +3467,7 @@ Other Style Guides
 ## Events
 
   <a name="events--hash"></a><a name="24.1"></a>
-  - [25.1](#events--hash) When attaching data payloads to events (whether DOM events or something more proprietary like Backbone events), pass an object literal (also known as a "hash")  instead of a raw value. This allows a subsequent contributor to add more data to the event payload without finding and updating every handler for the event. For example, instead of:
+  - [25.1](#events--hash) When attaching data payloads to events (whether DOM events or something more proprietary like Backbone events), pass an object literal (also known as a "hash") instead of a raw value. This allows a subsequent contributor to add more data to the event payload without finding and updating every handler for the event. For example, instead of:
 
     ```javascript
     // bad
@@ -3721,7 +3721,7 @@ Other Style Guides
 
   - [JavaScript: The Good Parts](https://www.amazon.com/JavaScript-Good-Parts-Douglas-Crockford/dp/0596517742) - Douglas Crockford
   - [JavaScript Patterns](https://www.amazon.com/JavaScript-Patterns-Stoyan-Stefanov/dp/0596806752) - Stoyan Stefanov
-  - [Pro JavaScript Design Patterns](https://www.amazon.com/JavaScript-Design-Patterns-Recipes-Problem-Solution/dp/159059908X)  - Ross Harmes and Dustin Diaz
+  - [Pro JavaScript Design Patterns](https://www.amazon.com/JavaScript-Design-Patterns-Recipes-Problem-Solution/dp/159059908X) - Ross Harmes and Dustin Diaz
   - [High Performance Web Sites: Essential Knowledge for Front-End Engineers](https://www.amazon.com/High-Performance-Web-Sites-Essential/dp/0596529309) - Steve Souders
   - [Maintainable JavaScript](https://www.amazon.com/Maintainable-JavaScript-Nicholas-C-Zakas/dp/1449327680) - Nicholas C. Zakas
   - [JavaScript Web Applications](https://www.amazon.com/JavaScript-Web-Applications-Alex-MacCaw/dp/144930351X) - Alex MacCaw

react/README.md

@@ -447,13 +447,13 @@ We don’t recommend using indexes for keys if the order of items may change.
   ```jsx
   // bad
   render() {
-    const { irrelevantProp, ...relevantProps  } = this.props;
+    const { irrelevantProp, ...relevantProps } = this.props;
     return <WrappedComponent {...this.props} />
   }
 
   // good
   render() {
-    const { irrelevantProp, ...relevantProps  } = this.props;
+    const { irrelevantProp, ...relevantProps } = this.props;
     return <WrappedComponent {...relevantProps} />
   }
   ```