fix: fix typos in docs (#1462)

Author: 0xflotus

docs/pages/4.fonts.md

@@ -8,7 +8,7 @@ title: Fonts
 
 The easiest way to install custom fonts to your RN project is do as follows:
 
-  1. Define path to asssets directory with fonts in project:
+  1. Define path to assets directory with fonts in project:
 
   Example:
 
@@ -43,7 +43,7 @@ The easiest way to install custom fonts to your RN project is do as follows:
 To create a custom font you need to prepare `fontConfig` where fonts are divided by platforms. 
 After you have to pass the `fontConfig` into `configureFonts` method in a custom theme. 
 
-Note: To override font on all platforms use `deafult` key.
+Note: To override font on all platforms use `default` key.
 
 Check the [default theme](https://github.com/callstack/react-native-paper/blob/master/src/styles/DefaultTheme.tsx) to see what customization options are supported.
 

docs/pages/5.react-native-web.md

@@ -38,7 +38,7 @@ module.exports = function override(config, env) {
         babelrc: false,
         configFile: false,
 
-        // The configration for compilation
+        // The configuration for compilation
         presets: [
           ["@babel/preset-env", { useBuiltIns: "usage" }],
           "@babel/preset-react",
@@ -183,7 +183,7 @@ Now, add the following in the `module.rules` array in your webpack config:
       babelrc: false,
       configFile: false,
 
-      // The configration for compilation
+      // The configuration for compilation
       presets: [
         ['@babel/preset-env', { useBuiltIns: 'usage' }],
         '@babel/preset-react',