docs(pipes): updated pipe documentation

modules/@angular/common/src/pipes/uppercase_pipe.ts

@@ -11,11 +11,16 @@ import {isBlank, isString} from '../facade/lang';
 import {InvalidPipeArgumentError} from './invalid_pipe_argument_error';
 
 /**
- * Implements uppercase transforms to text.
+ * @ngModule CommonModule
+ * @whatItDoes Transforms string to uppercase.
+ * @howToUse `expression | uppercase`
+ * @description
+ *
+ * Converts value into lowercase string using `String.prototype.toUpperCase()`.
  *
  * ### Example
  *
- * {@example core/pipes/ts/lowerupper_pipe/lowerupper_pipe_example.ts region='LowerUpperPipe'}
+ * {@example common/pipes/ts/lowerupper_pipe.ts region='LowerUpperPipe'}
  *
  * @stable
  */