Set Linux git config's autocrlf to input mode

linux/gitconfig.platform

@@ -1,4 +1,5 @@
 [code]
   editor = vim
 [core]
-    autocrlf = true
+  # Don't change LF line endings and if a CRLF is found then change it to LF on a commit.
+  autocrlf = input

windows/gitconfig.platform

@@ -1,4 +1,5 @@
 [code]
   editor = /usr/bin/vim
 [core]
+  # Convert unix LF to Windows CRLF when checking out and vice-versa when adding files to the index.
   autocrlf = true