minor #990 [TwigComponent] Add missing spaces in doc (smnandre)

This PR was merged into the 2.x branch.

Discussion
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[TwigComponent] Add missing spaces in doc

Tiny fix : add two missing spaces in doc examples

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Tickets       |
| License       | MIT

Commits
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7c8c836 CS: Add missing spaces

Author: weaverryan

src/TwigComponent/doc/index.rst

@@ -578,7 +578,7 @@ Set an attribute's value to ``true`` to render just the attribute name:
 .. code-block:: html+twig
 
     {# templates/components/MyComponent.html.twig #}
-    <input{{ attributes}}/>
+    <input{{ attributes }}/>
 
     {# render component #}
     {{ component('MyComponent', { type: 'text', value: '', autofocus: true }) }}
@@ -591,7 +591,7 @@ Set an attribute's value to ``false`` to exclude the attribute:
 .. code-block:: html+twig
 
     {# templates/components/MyComponent.html.twig #}
-    <input{{ attributes}}/>
+    <input{{ attributes }}/>
 
     {# render component #}
     {{ component('MyComponent', { type: 'text', value: '', autofocus: false }) }}