Switch word order

Author: kgryte

lib/node_modules/@stdlib/utils/if-then-async/README.md

@@ -72,7 +72,7 @@ Both `x` and `y` are provided a single argument:
 
 * `clbk`: callback to invoke upon function completion
 
-The callback function accepts any number of arguments, with the first argument reserved for providing an error. If the error argument is falsy, the `done` callback is invoked with its first argument as `null` and all other provided arguments. If the error argument is truthy, the `done` callback is invoked only with an error argument.
+The callback function accepts any number of arguments, with the first argument reserved for providing an error. If the error argument is falsy, the `done` callback is invoked with its first argument as `null` and all other provided arguments. If the error argument is truthy, the `done` callback is invoked with only an error argument.
 
 ``` javascript
 var randu = require( '@stdlib/math/base/random/randu' );

lib/node_modules/@stdlib/utils/if-then-async/docs/repl.txt

@@ -22,7 +22,7 @@
     If the error argument is falsy, the `done` callback is invoked with its
     first argument as `null` and all other provided arguments.
 
-    If the error argument is truthy, the `done` callback is invoked only with an
+    If the error argument is truthy, the `done` callback is invoked with only an
     error argument.
 
     Execution is *not* guaranteed to be asynchronous. To guarantee asynchrony,