docs code highlight fixed

Author: MusheAbdulHakim

docs/ApplePay.md

@@ -74,4 +74,5 @@ try {
     // Handle specific errors, e.g., domain not found, invalid operation.
 }
 
-?>
+?>
+```

docs/BulkCharge.md

@@ -119,4 +119,4 @@ if ($batchCode) {
     echo "\nSkipping batch-specific operations as no valid batch code was obtained from initiation.\n";
 }
 
-?>
+?>```

docs/Charge.md

@@ -163,4 +163,4 @@ try {
 // 2. You extract the reference from the initial response.
 // 3. You call the respective submit method with the user-provided data and the reference.
 
-?>
+?>```

docs/Customer.md

@@ -149,4 +149,4 @@ try {
     echo "Error deactivating authorization '{$sampleAuthorizationCode}': " . $e->getMessage() . "\n";
 }
 
-?>
+?>```

docs/Dispute.md

@@ -161,4 +161,4 @@ try {
     echo "Error exporting disputes: " . $e->getMessage() . "\n";
 }
 
-?>
+?>```

docs/Integration.md

@@ -65,4 +65,4 @@ try {
     echo "Error verifying updated payment session timeout: " . $e->getMessage() . "\n";
 }
 
-?>
+?>```

docs/Miscellaneous.md

@@ -86,4 +86,4 @@ try {
     echo "Error fetching Nigerian states: " . $e->getMessage() . "\n";
 }
 
-?>
+?>```

docs/PaymentPage.md

@@ -166,4 +166,4 @@ if ($fixedPageId && $dummyProductId) {
     echo "\nSkipping addProduct operation as either page ID or dummy product ID is missing.\n";
 }
 
-?>
+?>```

docs/PaymentRequest.md

@@ -140,4 +140,4 @@ try {
     echo "Error fetching total payment requests: " . $e->getMessage() . "\n";
 }
 
-?>
+?>```

docs/Plan.md

@@ -102,4 +102,4 @@ if ($planId || $planCode) {
     echo "\nSkipping plan-specific operations as no valid plan ID/code was obtained from creation.\n";
 }
 
-?>
+?>```