Merge pull request #41382 from Wiharris/BZ2048576

BZ2048576 Fixed the casing in the field names

Author: Christopher Tauchen

modules/install-sno-generating-the-discovery-iso-manually.adoc

@@ -90,8 +90,8 @@ networking:
   - <IP_address>/<prefix> <7>
 platform:
   none: {}
-BootstrapInPlace:
-  InstallationDisk: <path_to_install_drive> <8>
+bootstrapInPlace:
+  installationDisk: <path_to_install_drive> <8>
 pullSecret: '<pull_secret>' <9>
 sshKey: |
   <ssh_key> <10>