Clarify GSF Impact Framework description in README

Updated the description of the GSF Impact Framework entry for clarity.

Author: michael-s-ashida

README.md

@@ -67,7 +67,7 @@ Do you know of an incredible green software repository that we missed? Let us kn
 - [Green-algorithms-tool](https://github.com/GreenAlgorithms/green-algorithms-tool): The Green Algorithms project aims at promoting more environmentally sustainable computational science. It regroups calculators that researchers can use to estimate the carbon footprint of their projects, tips on how to be more environmentally friendly, training material, past talks etc.
 - [Carbonara](https://github.com/digital4better/carbonara/): This is a custom element to compute web navigation carbon footprint.
 - [Cpu-energy-meter](https://github.com/sosy-lab/cpu-energy-meter): A tool for measuring energy consumption of Intel CPUs.
-- [IF](https://github.com/Green-Software-Foundation/if): GSF Impact Framework for environmental impacts of software.
+- [IF](https://github.com/Green-Software-Foundation/if): Green Software Foundation's Impact Framework for environmental impacts of software.
 - [Carmen](https://github.com/Green-Software-Foundation/if-carmen): Carmen (Carbon Measurement Engine) is an open-source tool by the Green Software Foundation that enables organizations to measure the carbon footprint of their cloud-based software at two critical levels: infrastructure and application. 
 - [Experiment Runner](https://github.com/S2-group/experiment-runner): The Experiment Runner provides a framework for automatically executing measurement-based experiments on any platform with dedicated plugins for energy related metrics collection.
 - [Android Runner](https://github.com/S2-group/android-runner): The Android Runner provides a framework for automatically executing measurement-based experiments on native and web applications running on Android devices with dedicated plugins for energy related metrics collection.