Fixes typo in docs (#192)

Author: elena-kolevska

docs/stack/get-started/install-stack/binaries.md

@@ -3,7 +3,7 @@ title: Install Redis Stack with binaries
 linkTitle: binaries
 description: "How to install Redis Stack using tarballs"
 weight: 5
-alias: 
+aliases: 
     - /docs/stack/get-started/install/binaries/
 
 ---

docs/stack/get-started/install-stack/docker.md

@@ -3,7 +3,7 @@ title: Run Redis Stack on Docker
 linkTitle: Docker
 description: "How to install Redis Stack using Docker"
 weight: 2
-alias: 
+aliases: 
     - /docs/stack/get-started/install/docker/
 ---
 

docs/stack/get-started/install-stack/linux.md

@@ -3,7 +3,7 @@ title: Install Redis Stack on Linux
 linkTitle: Linux
 description: "How to install Redis Stack on Linux"
 weight: 4
-alias: 
+aliases: 
     - /docs/stack/get-started/install/linux/
 ---
 

docs/stack/get-started/install-stack/mac-os.md

@@ -3,7 +3,7 @@ title: Install Redis Stack on macOS
 linkTitle: macOS
 description: "How to install Redis Stack on macOS"
 weight: 3
-alias: 
+aliases: 
     - /docs/stack/get-started/install/mac-os/
 ---
 

docs/stack/get-started/install-stack/windows.md

@@ -3,7 +3,7 @@ title: Install Redis Stack on Windows
 linkTitle: Windows
 description: "How to install Redis Stack on Windows"
 weight: 1
-alias: 
+aliases: 
     - /docs/stack/get-started/install/windows/
 ---