Clarify editable installation step in README

[xzckay]

Hi,

I tested the installation workflow on Windows 11 and successfully installed and launched InSARHub.

While following the installation instructions, I noticed that the editable installation command

pip install -e .

may be unclear for first-time users.

It may be helpful to explicitly mention that:

• The trailing "." is requred.
• The Conda environment should already be activated before running the command.

A short note could make the installation process easier for new users.

Thanks for developing and maintaining this project.

[jldz9]

Thank you for your interest, I will be thankful if you would like to RP the correction that could better serve your need :)