Merge pull request #61 from reactjs/sync-7bdbab14

Sync with react.dev @ 7bdbab1

Author: pchalupa

src/content/learn/rendering-lists.md

@@ -113,9 +113,11 @@ const people = [{
   name: 'Mohammad Abdus Salam',
   profession: 'physicist',
 }, {
+  id: 3,
   name: 'Percy Lavon Julian',
   profession: 'chemist',  
 }, {
+  id: 4,
   name: 'Subrahmanyan Chandrasekhar',
   profession: 'astrophysicist',
 }];

src/content/learn/typescript.md

@@ -435,7 +435,7 @@ interface ModalRendererProps {
 
 Note, that you cannot use TypeScript to describe that the children are a certain type of JSX elements, so you cannot use the type-system to describe a component which only accepts `<li>` children. 
 
-You can see all an example of both `React.ReactNode` and `React.ReactElement` with the type-checker in [this TypeScript playground](https://www.typescriptlang.org/play?#code/JYWwDg9gTgLgBAJQKYEMDG8BmUIjgIilQ3wChSB6CxYmAOmXRgDkIATJOdNJMGAZzgwAFpxAR+8YADswAVwGkZMJFEzpOjDKw4AFHGEEBvUnDhphwADZsi0gFw0mDWjqQBuUgF9yaCNMlENzgAXjgACjADfkctFnYkfQhDAEpQgD44AB42YAA3dKMo5P46C2tbJGkvLIpcgt9-QLi3AEEwMFCItJDMrPTTbIQ3dKywdIB5aU4kKyQQKpha8drhhIGzLLWODbNs3b3s8YAxKBQAcwXpAThMaGWDvbH0gFloGbmrgQfBzYpd1YjQZbEYARkB6zMwO2SHSAAlZlYIBCdtCRkZpHIrFYahQYQD8UYYFA5EhcfjyGYqHAXnJAsIUHlOOUbHYhMIIHJzsI0Qk4P9SLUBuRqXEXEwAKKfRZcNA8PiCfxWACecAAUgBlAAacFm80W-CU11U6h4TgwUv11yShjgJjMLMqDnN9Dilq+nh8pD8AXgCHdMrCkWisVoAet0R6fXqhWKhjKllZVVxMcavpd4Zg7U6Qaj+2hmdG4zeRF10uu-Aeq0LBfLMEe-V+T2L7zLVu+FBWLdLeq+lc7DYFf39deFVOotMCACNOCh1dq219a+30uC8YWoZsRyuEdjkevR8uvoVMdjyTWt4WiSSydXD4NqZP4AymeZE072ZzuUeZQKheQgA).
+You can see an example of both `React.ReactNode` and `React.ReactElement` with the type-checker in [this TypeScript playground](https://www.typescriptlang.org/play?#code/JYWwDg9gTgLgBAJQKYEMDG8BmUIjgIilQ3wChSB6CxYmAOmXRgDkIATJOdNJMGAZzgwAFpxAR+8YADswAVwGkZMJFEzpOjDKw4AFHGEEBvUnDhphwADZsi0gFw0mDWjqQBuUgF9yaCNMlENzgAXjgACjADfkctFnYkfQhDAEpQgD44AB42YAA3dKMo5P46C2tbJGkvLIpcgt9-QLi3AEEwMFCItJDMrPTTbIQ3dKywdIB5aU4kKyQQKpha8drhhIGzLLWODbNs3b3s8YAxKBQAcwXpAThMaGWDvbH0gFloGbmrgQfBzYpd1YjQZbEYARkB6zMwO2SHSAAlZlYIBCdtCRkZpHIrFYahQYQD8UYYFA5EhcfjyGYqHAXnJAsIUHlOOUbHYhMIIHJzsI0Qk4P9SLUBuRqXEXEwAKKfRZcNA8PiCfxWACecAAUgBlAAacFm80W-CU11U6h4TgwUv11yShjgJjMLMqDnN9Dilq+nh8pD8AXgCHdMrCkWisVoAet0R6fXqhWKhjKllZVVxMcavpd4Zg7U6Qaj+2hmdG4zeRF10uu-Aeq0LBfLMEe-V+T2L7zLVu+FBWLdLeq+lc7DYFf39deFVOotMCACNOCh1dq219a+30uC8YWoZsRyuEdjkevR8uvoVMdjyTWt4WiSSydXD4NqZP4AymeZE072ZzuUeZQKheQgA).
 
 ### Style Props {/*typing-style-props*/}
 
@@ -456,7 +456,7 @@ We recommend the following resources:
 
  - [The TypeScript handbook](https://www.typescriptlang.org/docs/handbook/) is the official documentation for TypeScript, and covers most key language features.
 
- - [The TypeScript release notes](https://devblogs.microsoft.com/typescript/) covers a each new features in-depth.
+ - [The TypeScript release notes](https://devblogs.microsoft.com/typescript/) cover new features in depth.
 
  - [React TypeScript Cheatsheet](https://react-typescript-cheatsheet.netlify.app/) is a community-maintained cheatsheet for using TypeScript with React, covering a lot of useful edge cases and providing more breadth than this document.
 

src/content/reference/react/StrictMode.md

@@ -196,14 +196,16 @@ ul {
   margin: 0;
   list-style-type: none;
   height: 100%;
+  display: flex;
+  flex-wrap: wrap;
+  padding: 10px;
 }
 
 li {
   border: 1px solid #aaa;
   border-radius: 6px;
   float: left;
   margin: 5px;
-  margin-bottom: 20px;
   padding: 5px;
   width: 70px;
   height: 100px;
@@ -283,14 +285,16 @@ ul {
   margin: 0;
   list-style-type: none;
   height: 100%;
+  display: flex;
+  flex-wrap: wrap;
+  padding: 10px;
 }
 
 li {
   border: 1px solid #aaa;
   border-radius: 6px;
   float: left;
   margin: 5px;
-  margin-bottom: 20px;
   padding: 5px;
   width: 70px;
   height: 100px;
@@ -377,14 +381,16 @@ ul {
   margin: 0;
   list-style-type: none;
   height: 100%;
+  display: flex;
+  flex-wrap: wrap;
+  padding: 10px;
 }
 
 li {
   border: 1px solid #aaa;
   border-radius: 6px;
   float: left;
   margin: 5px;
-  margin-bottom: 20px;
   padding: 5px;
   width: 70px;
   height: 100px;
@@ -467,14 +473,16 @@ ul {
   margin: 0;
   list-style-type: none;
   height: 100%;
+  display: flex;
+  flex-wrap: wrap;
+  padding: 10px;
 }
 
 li {
   border: 1px solid #aaa;
   border-radius: 6px;
   float: left;
   margin: 5px;
-  margin-bottom: 20px;
   padding: 5px;
   width: 70px;
   height: 100px;