Fix typo

Author: naveen521kk

.github/workflows/ci.yml

@@ -107,7 +107,7 @@ jobs:
           $env:Path += ";" + "$($PWD)\ManimCache\FFmpeg\bin"
           $env:Path += ";" + "$($PWD)\ManimCache\LatexWindows\TinyTeX\bin\win32"
           $env:Path += ";" + "$($PWD)\ManimCache\SoX"
-          $rnv:Path += ";" + "$($PWD)\ManimCache\Pango"
+          $env:Path += ";" + "$($PWD)\ManimCache\Pango"
           $env:Path = "$env:USERPROFILE\.poetry\bin;$($env:PATH)"
           echo "::set-env name=Path::$env:Path"