rename aliases file to simpler filename for linking

docs/source/_data/sidebar.yml

@@ -9,7 +9,7 @@ guides:
     cypress-in-a-nutshell: cypress-in-a-nutshell.html
     organizing-tests: organizing-tests.html
     overview-of-the-gui-tool: overview-of-the-gui-tool.html
-    aliases-variables-in-an-async-world: aliases-variables-in-an-async-world.html
+    aliases: aliases.html
     dead-simple-debugging: dead-simple-debugging.html
     stubs-spies-clocks: stubs-spies-clocks.html
     dealing-with-the-network: dealing-with-the-network.html

docs/themes/cypress/languages/en.yml

@@ -29,7 +29,7 @@ sidebar:
     organizing-tests: Organizing Tests
     overview-of-the-gui-tool: Overview of the GUI Tool
     dead-simple-debugging: Dead Simple Debugging
-    aliases-variables-in-an-async-world: Aliases: Variables in an Async World
+    aliases: Aliases: Variables in an Async World
     stubs-spies-clocks: Stubs, Spies, and Clocks
     dealing-with-the-network: Controlling the Network
     taking-screenshots-and-recording-videos: Taking Screenshots and Recording Videos