Fix minor spacings in webflux docs

Closes gh-30078

Author: abelsromero

framework-docs/src/docs/asciidoc/web/webflux-cors.adoc

@@ -251,7 +251,7 @@ By default global configuration enables the following:
 * `GET`, `HEAD`, and `POST` methods.
 
 `allowedCredentials` is not enabled by default, since that establishes a trust level
-that exposes sensitive user-specific information( such as cookies and CSRF tokens) and
+that exposes sensitive user-specific information (such as cookies and CSRF tokens) and
 should be used only where appropriate. When it is enabled either `allowOrigins` must be
 set to one or more specific domain (but not the special value `"*"`) or alternatively
 the `allowOriginPatterns` property may be used to match to a dynamic set of origins.

framework-docs/src/docs/asciidoc/web/webflux.adoc

@@ -2504,7 +2504,7 @@ reactive type, as the following example shows:
 ----
 
 Note that use of `@ModelAttribute` is optional -- for example, to set its attributes.
-By default, any argument that is not a simple value type( as determined by
+By default, any argument that is not a simple value type (as determined by
 {api-spring-framework}/beans/BeanUtils.html#isSimpleProperty-java.lang.Class-[BeanUtils#isSimpleProperty])
 and is not resolved by any other argument resolver is treated as if it were annotated
 with `@ModelAttribute`.