Update text

.devcontainer/welcome-message.txt

@@ -3,5 +3,5 @@
 🛠️  Your environment is setup with all the required dependencies and your fork has been added as a remote.
 
 🚀  To start coding:
-    - make sure the virtualenv is activated by running `. .venv/bin/activate` or relaunching the terminal
+    - make sure the virtualenv is activated by running `. .venv/bin/activate`
     - run `git checkout -b your-branch-name origin/{main-or-latest-release}` to start working on a new feature or bug fix

CONTRIBUTING.rst

@@ -82,8 +82,7 @@ dependencies for you.
     then "Create codespace on main".
 -   Wait for the codespace to load and the ``postCreateCommand`` to
     finish running.
--   Open a new terminal or run the following command to activate the
-    python virtualenv.
+-   Run the following command to activate the python virtualenv.
 
     .. code-block:: text