update test script variable names for specificity

scripts/test/get_nft_provider_capability_optional.cdc

@@ -7,14 +7,14 @@ import "ExampleNFT"
 // Verify that a child address borrowed as a child will let the parent borrow an NFT provider capability
 pub fun main(parent: Address, child: Address, returnsNil: Bool): Bool {
     let acct = getAuthAccount(parent)
-    let m = acct.borrow<&HybridCustody.Manager>(from: HybridCustody.ManagerStoragePath)
+    let manager = acct.borrow<&HybridCustody.Manager>(from: HybridCustody.ManagerStoragePath)
         ?? panic("manager does not exist")
 
-    let childAcct = m.borrowAccount(addr: child) ?? panic("child account not found")
+    let childAcct = manager.borrowAccount(addr: child) ?? panic("child account not found")
 
-    let d = ExampleNFT.resolveView(Type<MetadataViews.NFTCollectionData>())! as! MetadataViews.NFTCollectionData
+    let collectionData = ExampleNFT.resolveView(Type<MetadataViews.NFTCollectionData>())! as! MetadataViews.NFTCollectionData
 
-    let nakedCap = childAcct.getCapability(path: d.providerPath, type: Type<&{NonFungibleToken.Provider}>())
+    let nakedCap = childAcct.getCapability(path: collectionData.providerPath, type: Type<&{NonFungibleToken.Provider}>())
 
     return returnsNil ? nakedCap == nil : nakedCap?.borrow<&{NonFungibleToken.Provider}>() != nil
 }