docs(README): remove redundant line breaks

Author: giladgd

README.md

@@ -162,11 +162,9 @@ console.log(eventRelay2.disposed === true); // true
 
 ### `AsyncDisposeAggregator`
 `AsyncDisposeAggregator` is a utility class that allows you to add multiple items and then dispose them all at once.
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 The items are disposed one by one in the order they were added.
 
 You can add a function to call, an object with a `dispose` method, an object with a `Symbol.dispose` method,
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 an object with a `Symbol.asyncDispose` method, or a Promise that resolves to one of the previous types.
 
 To dispose all the items, call `dispose` or use the `Symbol.asyncDispose` symbol.