Fix typos

snippets/deep-flatten-array.md

@@ -2,7 +2,7 @@
 
 Use recursion.
 Use `Array.concat()` with an empty array (`[]`) and the spread operator (`...`) to flatten an array.
-Rrecursively flatten each element that is an array.
+Recursively flatten each element that is an array.
 
 ```js
 const deepFlatten = arr => [].concat(...arr.map(v => Array.isArray(v) ? deepFlatten(v) : v));

snippets/shallow-clone-object.md

@@ -1,6 +1,6 @@
 ### Shallow clone object
 
-Use `Object.assign()` and an empty object (`{}`) to create a shallo clone of the original.
+Use `Object.assign()` and an empty object (`{}`) to create a shallow clone of the original.
 
 ```js
 const shallowClone = obj => Object.assign({}, obj);

snippets/validate-email.md

@@ -1,6 +1,6 @@
 ### Validate email
 
-Use a regular experssion to check if the email is valid.
+Use a regular expression to check if the email is valid.
 Returns `true` if email is valid, `false` if not.
 
 ```js