gofmt and typo fix

Author: Umair Idris

errors.go

@@ -27,7 +27,7 @@
 // Retrieving the cause of an error
 //
 // Using errors.Wrap constructs a stack of errors, adding context to the
-// preceeding error. Depending on the nature of the error it may be necessary
+// preceding error. Depending on the nature of the error it may be necessary
 // to recerse the operation of errors.Wrap to retrieve the original error
 // for inspection. Any error value which implements this interface
 //

errors_test.go

@@ -17,7 +17,7 @@ func TestNew(t *testing.T) {
 		{"", fmt.Errorf("")},
 		{"foo", fmt.Errorf("foo")},
 		{"foo", New("foo")},
-    {"string with format specifiers: %v", errors.New("string with format specifiers: %v")},
+		{"string with format specifiers: %v", errors.New("string with format specifiers: %v")},
 	}
 
 	for _, tt := range tests {