Use singular form of spec names.

spec/chromium-spec.coffee

@@ -1,4 +1,4 @@
-describe 'chromium features', ->
+describe 'chromium feature', ->
   describe 'heap snapshot', ->
     it 'does not crash', ->
       process.atomBinding('v8_util').takeHeapSnapshot()

spec/modules-spec.coffee

@@ -2,7 +2,7 @@ assert = require 'assert'
 fs     = require 'fs'
 path   = require 'path'
 
-describe 'third-party modules', ->
+describe 'third-party module', ->
   fixtures = path.join __dirname, 'fixtures'
 
   describe 'd3', ->

spec/node-spec.coffee

@@ -3,7 +3,7 @@ child_process = require 'child_process'
 fs            = require 'fs'
 path          = require 'path'
 
-describe 'node features', ->
+describe 'node feature', ->
   describe 'child_process', ->
     fixtures = path.join __dirname, 'fixtures'