Fix config syntax for PHP 8 attribute (extend output type) (#464)

Author: andrew-demb

website/docs/extend-type.mdx

@@ -176,7 +176,7 @@ Let's break this sample:
   <TabItem value="php8">
 
 ```php
-#[ExtendType(class=Product::class)]
+#[ExtendType(class: Product::class)]
 ```
 
   </TabItem>

website/docs/multiple-output-types.mdx

@@ -238,7 +238,7 @@ you will write:
   <TabItem value="php8">
 
 ```php
-#ExtendType(name: "LimitedProduct")
+#[ExtendType(name: "LimitedProduct")]
 ```
 
   </TabItem>

website/versioned_docs/version-3.0/multiple_output_types.mdx

@@ -238,7 +238,7 @@ you will write:
   <TabItem value="php8">
 
 ```php
-#ExtendType(name: "LimitedProduct")
+#[ExtendType(name: "LimitedProduct")]
 ```
 
   </TabItem>

website/versioned_docs/version-4.1/extend_type.mdx

@@ -177,7 +177,7 @@ Let's break this sample:
   <TabItem value="php8">
 
 ```php
-#[ExtendType(class=Product::class)]
+#[ExtendType(class: Product::class)]
 ```
 
   </TabItem>

website/versioned_docs/version-4.1/multiple_output_types.mdx

@@ -239,7 +239,7 @@ you will write:
   <TabItem value="php8">
 
 ```php
-#ExtendType(name: "LimitedProduct")
+#[ExtendType(name: "LimitedProduct")]
 ```
 
   </TabItem>

website/versioned_docs/version-4.2/extend-type.mdx

@@ -176,7 +176,7 @@ Let's break this sample:
   <TabItem value="php8">
 
 ```php
-#[ExtendType(class=Product::class)]
+#[ExtendType(class: Product::class)]
 ```
 
   </TabItem>

website/versioned_docs/version-4.2/multiple-output-types.mdx

@@ -238,7 +238,7 @@ you will write:
   <TabItem value="php8">
 
 ```php
-#ExtendType(name: "LimitedProduct")
+#[ExtendType(name: "LimitedProduct")]
 ```
 
   </TabItem>

website/versioned_docs/version-4.3/extend-type.mdx

@@ -176,7 +176,7 @@ Let's break this sample:
   <TabItem value="php8">
 
 ```php
-#[ExtendType(class=Product::class)]
+#[ExtendType(class: Product::class)]
 ```
 
   </TabItem>

website/versioned_docs/version-4.3/multiple-output-types.mdx

@@ -238,7 +238,7 @@ you will write:
   <TabItem value="php8">
 
 ```php
-#ExtendType(name: "LimitedProduct")
+#[ExtendType(name: "LimitedProduct")]
 ```
 
   </TabItem>

website/versioned_docs/version-5.0/extend-type.mdx

@@ -176,7 +176,7 @@ Let's break this sample:
   <TabItem value="php8">
 
 ```php
-#[ExtendType(class=Product::class)]
+#[ExtendType(class: Product::class)]
 ```
 
   </TabItem>