Fixing typo

Author: bergerhoffer

modules/installation-planning.adoc

@@ -6,7 +6,7 @@
 = Planning your installation
 
 You install {product-title} by running a series of Ansible playbooks. As you
-prepare to install your cluster, you create an inventory file that 
+prepare to install your cluster, you create an inventory file that
 represents your environment and {product-title} cluster configuration. While
 familiarity with Ansible might make this process easier, it is not required.
 
@@ -32,7 +32,7 @@ environment needs to be.
 for multiple examples of Single Master and Multiple Master
 configurations.
 
-* _Does you need a high availability cluster?_
+* _Do you need a high availability cluster?_
 High availability configurations improve fault tolerance. In this situation, you
 might use the Multiple Masters Using Native HA
 example to set up your environment.
@@ -189,7 +189,7 @@ You can also install {product-title} to act as a stand-alone registry using the
 [id='planning-installation-types-{context}']
 == Installation types for supported infrastructure
 
-Starting in {product-title} 4.0, you can install the cluster on your own 
+Starting in {product-title} 4.0, you can install the cluster on your own
 infrastructure nodes or install a fully-managed cluster on certain cloud providers.
 
 .Differences between installation types