[ODC] Fix instances of "upper right of the console"

According to the IBM style guide:

https://www.ibm.com/docs/en/ibm-style?topic=elements-ui#location-of-interface-elements

When you refer to the location of an element in a graphical user interface, do not use sensory words, such as top, bottom, right, or left.

There are two instances in the web terminal docs that need to be updated / rewritten to conform:

• modules/odc-installing-web-terminal.adoc:. After the Operator is installed, refresh your page to see the command line terminal icon on the upper right of the console.

• modules/odc-using-web-terminal.adoc:. To launch the web terminal, click the command line terminal icon (image:odc-wto-icon.png[title="wto icon"]) on the upper right of the console. A web terminal instance is displayed in the Command line terminal pane. This instance is automatically logged in with your credentials.