Update WSL2 install instructions

Author: hoffmang9

INSTALL.md

@@ -40,7 +40,7 @@ cd chia-blockchain
 
 sh install.sh
 
-. .venv/bin/activate
+. ./activate
 ```
 ### Amazon Linux 2
 
@@ -60,7 +60,7 @@ cd chia-blockchain
 
 sh install.sh
 
-. .venv/bin/activate
+. ./activate
 ```
 ### CentOS 7
 
@@ -88,52 +88,31 @@ git clone https://github.com/Chia-Network/chia-blockchain.git
 cd chia-blockchain
 
 sh install.sh
-. .venv/bin/activate
+. ./activate
 ```
 
 ### Windows (WSL + Ubuntu)
-#### Install WSL + Ubuntu 18.04 LTS, upgrade to Ubuntu 19.x
+#### Install WSL2 + Ubuntu 18.04 LTS
 
-This will require multiple reboots. From an Administrator PowerShell
+From an Administrator PowerShell
 `Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux`
 and then
 `Enable-WindowsOptionalFeature -Online -FeatureName VirtualMachinePlatform`.
-Once that is complete, install Ubuntu 18.04 LTS from the Microsoft Store.
+This usually requires a reboot. Once that is complete, install Ubuntu 18.04 LTS from the Microsoft Store.
 ```bash
-# Upgrade to 19.x
-sudo nano /etc/update-manager/release-upgrades
-# Change "Prompt=lts" to "Prompt=normal" save and exit
+# add-apt-repository
+sudo apt install software-properties-common -y
+sudo add-apt-repository ppa:deadsnakes/ppa -y
 
 sudo apt-get -y update
 sudo apt-get -y upgrade
-sudo do-release-upgrade
-
-sudo apt-get install -y build-essential cmake python3-dev python3-venv software-properties-common libgmp3-dev --no-install-recommends
-
-git clone https://github.com/Chia-Network/chia-blockchain.git
-cd chia-blockchain
-
-sudo sh install.sh
-. .venv/bin/activate
-```
-
-#### Alternate method for Ubuntu 18.04 LTS
-In `./install.sh`:
-Change `python3` to `python3.7`
-Each line that starts with `pip ...` becomes `python -m pip ...`
-
-```bash
-sudo apt-get -y update
-sudo apt-get install -y build-essential cmake python3-dev python3-venv software-properties-common libgmp3-dev --no-install-recommends
 
-# Install python3.7 with ppa
-sudo add-apt-repository -y ppa:deadsnakes/ppa
-sudo apt-get -y update
-sudo apt-get install -y python3.7 python3.7-venv python3.7-dev
+sudo apt-get install python3.7-venv python3.7-dev -y
+sudo apt-get install build-essential git cmake libgmp3-dev libssl-dev libboost-all-dev -y
 
 git clone https://github.com/Chia-Network/chia-blockchain.git
 cd chia-blockchain
 
 sudo sh install.sh
-. .venv/bin/activate
+. ./activate
 ```