Merge branch 'hokutochen-v4-patch-12507' into 'v4'

upped medusa version and updated brew command

See merge request Kwoth/nadekobot!271

docs/guides/osx-guide.md

@@ -7,7 +7,7 @@ Open Terminal (if you don't know how to, click on the magnifying glass on the to
 ###### Homebrew/wget  
 *Skip this step if you already have homebrew installed*
 - Copy and paste this command, then press Enter:  
-    - `/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"`  
+    - `/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"`  
 - Install wget  
     - `brew install wget`  
     

docs/medusa/creating-a-medusa.md

@@ -155,7 +155,7 @@ This section will guide you through how to create a simple custom medusa. You ca
     <ItemGroup>
         <!-- Base medusa package. You MUST reference this in order to have a working medusa -->
         <!-- Also, this package comes from MyGet, which requires you to have a NuGet.Config file next to your .csproj -->
-        <PackageReference Include="Nadeko.Medusa" Version="1.0.1">
+        <PackageReference Include="Nadeko.Medusa" Version="4.3.9">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>