docs: update gam-bidding-only-html-banner

prebid-mobile/recipes/subrecipes/ios/gam-bidding-only-html-banner.md

@@ -43,10 +43,7 @@ Integration example:
     }
 }
 {% endcapture %}
-{% capture gma11 %}
-
-```swift
-func createAd() {
+{% capture gma11 %}func createAd() {
     // 1. Create a BannerAdUnit using Prebid Mobile SDK
     adUnit = BannerAdUnit(configId: CONFIG_ID, size: AD_SIZE)
     adUnit.setAutoRefreshMillis(time: 30000)
@@ -75,7 +72,6 @@ func createAd() {
         self?.gamBanner.load(gamRequest)
     }
 }
-```
 
 {% endcapture %}
 
@@ -85,7 +81,6 @@ If you want to support several ad sizes, you also need to implement `GADBannerVi
 
 In case you use a single-size banner (e.g., 300x250), you don't need to make a call to the `AdViewUtils.findPrebidCreativeSize` routine because you already know the size of the creative. However, you still need to call `bannerView.resize` because the creative in GMA has a default size of 1x1, and without this call, it will be rendered as a pixel.
 
-```swift
 func bannerViewDidReceiveAd(_ bannerView: GADBannerView) {
     // 6. Resize ad view if needed (Prebid Mobile SDK)
     AdViewUtils.findPrebidCreativeSize(bannerView, success: { size in
@@ -95,7 +90,6 @@ func bannerViewDidReceiveAd(_ bannerView: GADBannerView) {
         // The received ad is not Prebid’s one 
     })
 }
-```
 
 {: .alert.alert-info :}
 Make sure you process all possible cases in the  `AdViewUtils.findPrebidCreativeSize` callbacks (both success and failure).  Sometimes you might not get the size of the creative (or a failure callback) - it simply means that this is not a Prebid creative.  It means that you still need to render the creative, but you most likely don’t need to resize it.
@@ -133,12 +127,10 @@ Ensure that you call the _load_ method with the same `GAMRequest` object that yo
 
 Once an app receives a signal that an ad is loaded, you should use the method `AdViewUtils.findPrebidCreativeSize` to verify whether it's Prebid Server’s ad and resize the ad slot respectively to the creative's properties. 
 
-```swift
 // GMA SDK functions
 func validBannerSizes(for adLoader: GADAdLoader) -> [NSValue] {
     return [NSValueFromGADAdSize(GADAdSizeFromCGSize(adSize))]
 }
-```
 
 The function above provides valid banner sizes for the ad loader. Adjust it according to the size of your ad.