doc: streamline errors.md introductory material

doc/api/errors.md

@@ -6,19 +6,13 @@
 Applications running in Node.js will generally experience four categories of
 errors:
 
-- Standard JavaScript errors such as:
-  - {EvalError} : thrown when a call to `eval()` fails.
-  - {SyntaxError} : thrown in response to improper JavaScript language
-    syntax.
-  - {RangeError} : thrown when a value is not within an expected range
-  - {ReferenceError} : thrown when using undefined variables
-  - {TypeError} : thrown when passing arguments of the wrong type
-  - {URIError} : thrown when a global URI handling function is misused.
+- Standard JavaScript errors such as {EvalError}, {SyntaxError}, {RangeError}, 
+  {ReferenceError}, {TypeError}, and {URIError}.
 - System errors triggered by underlying operating system constraints such
-  as attempting to open a file that does not exist, attempting to send data
-  over a closed socket, etc;
-- And User-specified errors triggered by application code.
-- `AssertionError`s are a special class of error that can be triggered whenever
+  as attempting to open a file that does not exist or attempting to send data
+  over a closed socket.
+- User-specified errors triggered by application code.
+- `AssertionError`s are a special class of error that can be triggered when
   Node.js detects an exceptional logic violation that should never occur. These
   are raised typically by the `assert` module.