Update .travis.yml

.travis.yml

@@ -4,7 +4,7 @@ matrix:
     - os: windows
       language: sh
       python: "3.8"
-      env: "PATH="/c/Python:/c/Python/Scripts:$PATH""
+      env: "PATH=/c/Python:/c/Python/Scripts:$PATH"
       # Perform the manual steps on windows to install python3
       before_install:
         - choco install python --version=3.8.6
@@ -25,7 +25,6 @@ matrix:
       arch: ppc64le
     - python: "3.6"
       arch: ppc64le
-        
 install:
   - python -m pip install tox
 before_script: