Update expected error message for change in Gem::Requirement#to_s

spec/resolver_spec.rb

@@ -183,7 +183,7 @@ def self.save!(path, name, index, requirements, resolved)
 Unable to satisfy the following requirements:
 
 - `json (>= 1.7.7)` required by `berkshelf (2.0.7)`
-- `json (<= 1.7.7, >= 1.4.4)` required by `chef (10.26)`
+- `json (>= 1.4.4, <= 1.7.7)` required by `chef (10.26)`
           EOS
           expect(conflict.message_with_trees(:version_for_spec => lambda(&:version))).to eq <<-EOS.strip
 Molinillo could not find compatible versions for possibility named "json":
@@ -194,7 +194,7 @@ def self.save!(path, name, index, requirements, resolved)
 
     chef_app_error (>= 0) was resolved to 1.0.0, which depends on
       chef (~> 10.26) was resolved to 10.26, which depends on
-        json (<= 1.7.7, >= 1.4.4)
+        json (>= 1.4.4, <= 1.7.7)
           EOS
         end
       end