Fix some grammar

Author: brettcannon

containers/python-3-miniconda/.devcontainer/noop.txt

@@ -1,3 +1,3 @@
-This file copied into the container along with environment.yml* from the parent
-folder. This file is included to prevents the Dockerfile COPY instruction from 
-failing if no environment.yml is found.
+This file is copied into the container along with environment.yml* from the
+parent folder. This is done to prevent the Dockerfile COPY instruction from 
+failing if no environment.yml is found.