Make typechecker errors vim quickfix friendly

Should probably be helpful for emacs afaik.

Author: lekemula

lib/solargraph/shell.rb

@@ -187,7 +187,7 @@ def typecheck *files
           problems = checker.problems
           next if problems.empty?
           problems.sort! { |a, b| a.location.range.start.line <=> b.location.range.start.line }
-          puts problems.map { |prob| "#{prob.location.filename}:#{prob.location.range.start.line + 1} - #{prob.message}" }.join("\n")
+          puts problems.map { |prob| "#{prob.location.filename}:#{prob.location.range.start.line + 1}: #{prob.message}" }.join("\n")
           filecount += 1
           probcount += problems.length
         end