docs: fix text wrapping in REPL text files

Propagates fix from d69f7f9 ("docs: fix text wrapping in repl text file") to sibling REPL files whose prose paragraphs exceeded the 80-column width policy documented in docs/contributing/repl_text.md. Wraps the offending line in `utils/define-properties` while keeping `Default: undefined.` inline per the file's existing convention, and wraps the `normalize.assign` description in `number/float32/base/normalize` at the natural word boundary.

Author: claude

lib/node_modules/@stdlib/number/float32/base/normalize/docs/repl.txt

@@ -39,8 +39,8 @@
 
 
 {{alias}}.assign( x, out, stride, offset )
-    Returns a normal number `y` and exponent `exp` satisfying `x = y * 2^exp` and
-    assigns results to a provided output array.
+    Returns a normal number `y` and exponent `exp` satisfying `x = y * 2^exp`
+    and assigns results to a provided output array.
 
     The first element of the returned array corresponds to `y` and the second to
     `exp`.

lib/node_modules/@stdlib/utils/define-properties/docs/repl.txt

@@ -34,7 +34,8 @@
     - set: function which serves as a setter for the property, or, if no setter,
     undefined. When assigning a property value, a setter function is called with
     one argument (the value being assigned to the property) and with the `this`
-    context set to the object through which the property is assigned. Default: undefined.
+    context set to the object through which the property is
+    assigned. Default: undefined.
 
     Parameters
     ----------