Fix typo in P24 bank name (stripe#3364)

## Summary
<!-- Simple summary of what was changed. -->

This updates the name of a P24 bank name which was originally
misspelled.

## Motivation
<!-- Why are you making this change? If it's for fixing a bug, if
possible, please include a code snippet or example project that
demonstrates the issue. -->

A dev reached out to us on Discord pointing out the typo in the bank
name.

## Testing
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## Changelog
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    - [Added] for new features.
    - [Changed] for changes in existing functionality.
    - [Deprecated] for soon-to-be removed features.
    - [Removed] for now removed features.
    - [Fixed] for any bug fixes.
    - [Security] in case of vulnerabilities.
-->

StripePaymentSheet/StripePaymentSheet/Resources/JSON/form_specs.json

@@ -621,7 +621,7 @@
                         "api_value": "noble_pay"
                     },
                     {
-                        "display_text": "PBac z iPKO (PKO+BP)",
+                        "display_text": "Płać z iPKO (PKO BP)",
                         "api_value": "pbac_z_ipko"
                     },
                     {