Fixed the name mapping for MarkPress to use proper capitalization

repositories.json

@@ -1973,7 +1973,7 @@
 		"SublimeMagick": "ImageMagick",
 		"SublimeMakeExecutable": "MakeExecutable",
 		"SublimeMarkdownBuild": "MarkdownBuild",
-		"SublimeMarkPress": "MarkPress",
+		"sublimemarkpress": "MarkPress",
 		"SublimeMaven": "Maven",
 		"SublimeMorse": "Morse",
 		"SublimeNavigationHistory": "Navigation History",
@@ -2186,6 +2186,7 @@
 		"Strapdown.js Preview": "Strapdown.js Markdown Preview",
 		"Sublime GDB Plugin For Golang": "GoGdb",
 		"SublimeBracketeer": "Bracketeer",
+		"sublimemarkpress": "MarkPress",
 		"SublimeMoveText": "MoveText",
 		"SublimeQuickfind": "Quickfind",
 		"SublimeTransposeCharacter": "TransposeCharacter",