docs: Unified Node.js capitalization (#1986)

[skip ci]

Author: FuJa0815

README.md

@@ -4,7 +4,7 @@
 
 # nodemon
 
-nodemon is a tool that helps develop node.js based applications by automatically restarting the node application when file changes in the directory are detected.
+nodemon is a tool that helps develop Node.js based applications by automatically restarting the node application when file changes in the directory are detected.
 
 nodemon does **not** require *any* additional changes to your code or method of development. nodemon is a replacement wrapper for `node`. To use `nodemon`, replace the word `node` on the command line when executing your script.
 

package.json

@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/remy/nodemon.git"
   },
-  "description": "Simple monitor script for use during development of a node.js app.",
+  "description": "Simple monitor script for use during development of a Node.js app.",
   "keywords": [
     "cli",
     "monitor",

website/index.html

@@ -33,7 +33,7 @@ <h1><strong>nodemon</strong> reload, automatically.</h1>
 
       <p>Swap <strong>nodemon</strong> instead of <strong>node</strong> to run your code, and now your process will
         automatically restart when your code changes. To install, get <a href="https://nodejs.org"
-          target="_blank">node.js</a>, then from your terminal run:</p>
+          target="_blank">Node.js</a>, then from your terminal run:</p>
 
       <pre><code>npm install -g nodemon</code></pre>