chore(docs): capitalize all Instaces of "package"

To make the headings consistent.

PR-URL: #2760
Credit: @MrBrain295
Close: #2760
Reviewed-by: @wraithgar

Author: MrBrain295

docs/content/using-npm/developers.md

@@ -93,7 +93,7 @@ You can use `npm init` in the root of your package in order to get you
 started with a pretty basic package.json file.  See [`npm
 init`](/commands/npm-init) for more info.
 
-### Keeping files *out* of your package
+### Keeping files *out* of your Package
 
 Use a `.npmignore` file to keep stuff out of your package.  If there's no
 `.npmignore` file, but there *is* a `.gitignore` file, then npm will ignore
@@ -210,7 +210,7 @@ and then follow the prompts.
 
 This is documented better in [npm adduser](/commands/npm-adduser).
 
-### Publish your package
+### Publish your Package
 
 This part's easy.  In the root of your folder, do this: