Settings v Preferences mismatch

[lukemulks]

• Did you search for similar issues before submitting this one?
  Yes

• Describe the issue you encountered:
  I was opening an issue for Sync, and noticed that we use Settings from the top menu:
  Edit > Settings for the about:preferences page.

Sync issue opened for reference: brave/sync#79

• Platform (Win7, 8, 10? macOS? Linux distro?):

All (suspected) - need confirmation for macOS.

• Brave Version (revision SHA):

Brave: 0.14.2 
rev: d4cad892de4c8da087c4efee2e8955caa630675c 
Muon: 2.57.10 
libchromiumcontent: 57.0.2987.133 
V8: 5.7.492.71 
Node.js: 7.4.0 
Update Channel: dev 
os.platform: win32 
os.release: 10.0.14393 
os.arch: x64

• Steps to reproduce:

Captured in this screenshot:

Within the Android browser, this is also referred to as Settings instead of Preferences. I'm not sure how much we can control for naming within the Android Brave browser, but I wanted to match if we're looking to have cross-platform consistency.

We're going to want to make sure we have consistency so the Sync instructions match across platforms.

@bradleyrichter I'm going to assign you on this once since we're talking about UI across platforms. Let me know if there's anything else I can assist with for this.

[cndouglas]

This is due to differing OS naming conventions (see #2277).
Windows and Linux use "Settings".
macOS uses "Preferences".

The mismatch in UI instructions is a problem, though.