Revert "Increased markdown minimum version"

This reverts commit 5249a6a.

Author: Avid29

src/Libs/Quarrel.Markdown/Quarrel.Markdown.csproj

@@ -14,7 +14,7 @@
     <Nullable>enable</Nullable>
     <TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
     <TargetPlatformVersion Condition=" '$(TargetPlatformVersion)' == '' ">10.0.22000.0</TargetPlatformVersion>
-    <TargetPlatformMinVersion>10.0.18362.0</TargetPlatformMinVersion>
+    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
     <MinimumVisualStudioVersion>14</MinimumVisualStudioVersion>
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>