Fix typo in comment

Author: oxinabox

base/initdefs.jl

@@ -286,7 +286,7 @@ function load_path_expand(env::AbstractString)::Union{String, Nothing}
             if env == "@script"  # complete match, not startswith, so search upwards
                 return current_project(dir)
             else
-                # starts with, so assume rleative path is after
+                # starts with, so assume relative path is after
                 return abspath(replace(env, "@script" => dir))
             end
         end