Editorial: Break up a long para in "Object Internal Methods and Inter…

…nal Slots" (tc39#1539)

The para starts out explaining how to read the "Signature" column, but then it drifted a bit.
I pulled out the last two sentences into separate paragraphs.
Also, I swapped the order, because when you execute an internal method, accessing the target logically precedes returning a value.

spec.html

@@ -1351,7 +1351,9 @@ <h1>Object Internal Methods and Internal Slots</h1>
         <p>Internal slots correspond to internal state that is associated with objects and used by various ECMAScript specification algorithms. Internal slots are not object properties and they are not inherited. Depending upon the specific internal slot specification, such state may consist of values of any ECMAScript language type or of specific ECMAScript specification type values. Unless explicitly specified otherwise, internal slots are allocated as part of the process of creating an object and may not be dynamically added to an object. Unless specified otherwise, the initial value of an internal slot is the value *undefined*. Various algorithms within this specification create objects that have internal slots. However, the ECMAScript language provides no direct way to associate internal slots with an object.</p>
         <p>Internal methods and internal slots are identified within this specification using names enclosed in double square brackets [[ ]].</p>
         <p><emu-xref href="#table-5"></emu-xref> summarizes the <em>essential internal methods</em> used by this specification that are applicable to all objects created or manipulated by ECMAScript code. Every object must have algorithms for all of the essential internal methods. However, all objects do not necessarily use the same algorithms for those methods.</p>
-        <p>The &ldquo;Signature&rdquo; column of <emu-xref href="#table-5"></emu-xref> and other similar tables describes the invocation pattern for each internal method. The invocation pattern always includes a parenthesized list of descriptive parameter names. If a parameter name is the same as an ECMAScript type name then the name describes the required type of the parameter value. If an internal method explicitly returns a value, its parameter list is followed by the symbol &ldquo;&rarr;&rdquo; and the type name of the returned value. The type names used in signatures refer to the types defined in clause <emu-xref href="#sec-ecmascript-data-types-and-values"></emu-xref> augmented by the following additional names. &ldquo;<em>any</em>&rdquo; means the value may be any ECMAScript language type. An internal method implicitly returns a Completion Record. In addition to its parameters, an internal method always has access to the object that is the target of the method invocation.</p>
+        <p>The &ldquo;Signature&rdquo; column of <emu-xref href="#table-5"></emu-xref> and other similar tables describes the invocation pattern for each internal method. The invocation pattern always includes a parenthesized list of descriptive parameter names. If a parameter name is the same as an ECMAScript type name then the name describes the required type of the parameter value. If an internal method explicitly returns a value, its parameter list is followed by the symbol &ldquo;&rarr;&rdquo; and the type name of the returned value. The type names used in signatures refer to the types defined in clause <emu-xref href="#sec-ecmascript-data-types-and-values"></emu-xref> augmented by the following additional names. &ldquo;<em>any</em>&rdquo; means the value may be any ECMAScript language type.</p>
+        <p>In addition to its parameters, an internal method always has access to the object that is the target of the method invocation.</p>
+        <p>An internal method implicitly returns a Completion Record.</p>
         <emu-table id="table-5" caption="Essential Internal Methods">
           <table>
             <tbody>