Update README

Author: Chuxel

containers/docker-existing-docker-compose/README.md

@@ -25,7 +25,7 @@ Follow these steps to use it:
 2. To use VS Code's copy of this definition:
    1. Start VS Code and open your project folder.
    2. Press <kbd>F1</kbd> select and **Remote-Containers: Add Development Container Configuration Files...** from the command palette.
-   3. Select the Existing Docker Compose (Extend) definition.
+   3. You should be presented with the option to reuse your existing Docker Compose file if one is found on the system. Select this to use the definition.
 
 3. To use latest-and-greatest copy of this definition from the repository:
    1. Clone this repository.

containers/docker-existing-dockerfile/README.md

@@ -25,7 +25,7 @@ Follow these steps to use it:
 2. To use VS Code's copy of this definition:
    1. Start VS Code and open your project folder.
    2. Press <kbd>F1</kbd> select and **Remote-Containers: Add Development Container Configuration Files...** from the command palette.
-   3. You should be presented with the option to reuse your existing Dockerfile if one is found on the system. Select this to usee the definition.
+   3. You should be presented with the option to reuse your existing Dockerfile if one is found on the system. Select this to use the definition.
 
 3. To use latest-and-greatest copy of this definition from the repository:
    1. Clone this repository.