npm-update: add page (#14242)

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/common/npm-update.md

@@ -0,0 +1,20 @@
+# npm update
+
+> Update packages in the current project.
+> More information: <https://docs.npmjs.com/cli/commands/npm-update>.
+
+- Update all packages in the current project:
+
+`npm update`
+
+- Update a specific package in the current project:
+
+`npm update {{package}}`
+
+- Update a package globally:
+
+`npm update -g {{package}}`
+
+- Update multiple packages at once:
+
+`npm update {{package1 package2 ...}}`