Remove typo in specs. (thanks Brian Colfer for spotting it)

Signed-off-by: Marcos Tapajós <tapajos@gmail.com>

spec/couchrest/assocations_spec.rb

@@ -8,7 +8,7 @@ describe "Assocations" do
   describe "of type belongs to" do
 
     before :each do
-      @invoice = SaleInvoice.create(:price => "sam", :price => 2000)
+      @invoice = SaleInvoice.create(:price => 2000)
       @client = Client.create(:name => "Sam Lown")
     end
 
@@ -69,7 +69,7 @@ describe "Assocations" do
   describe "of type collection_of" do
 
     before(:each) do
-      @invoice = SaleInvoice.create(:price => "sam", :price => 2000)
+      @invoice = SaleInvoice.create(:price => 2000)
       @entries = [
         SaleEntry.create(:description => 'test line 1', :price => 500),
         SaleEntry.create(:description => 'test line 2', :price => 500),