docs: fix by proofreading

Author: kenjis

user_guide_src/source/incoming/routing.rst

@@ -85,8 +85,9 @@ Specifying Route Handlers
 Controller's Namespace
 ----------------------
 
-When you specify a controller and method name as a string,
-if a controller name is stated without beginning with ``\``, the :ref:`routing-default-namespace` will be prepended:
+When you specify a controller and method name as a string, if a controller is
+written without a leading ``\``, the :ref:`routing-default-namespace` will be
+prepended:
 
 .. literalinclude:: routing/063.php
 
@@ -115,9 +116,9 @@ Or using ``use`` keyword:
 .. literalinclude:: routing/014.php
    :lines: 2-
 
-If you forget ``use App\Controllers\Home;``, the controller classname is interpreted
-as ``Config\Home``, not ``App\Controllers\Home`` because **app/Config/Routes.php**
-has ``namespace Config;`` at the top.
+If you forget to add ``use App\Controllers\Home;``, the controller classname is
+interpreted as ``Config\Home``, not ``App\Controllers\Home`` because
+**app/Config/Routes.php** has ``namespace Config;`` at the top.
 
 .. note:: When you use Array Callable Syntax, the classname is always interpreted
     as a fully qualified classname. So :ref:`routing-default-namespace` and