docs: fix styles for missing cards (#1048)

## Description

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implemented in this PR. -->

### Introduces a breaking change?

- [ ] Yes
- [x] No

### Type of change

- [ ] Bug fix (change which fixes an issue)
- [ ] New feature (change which adds functionality)
- [x] Documentation update (improves or adds clarity to existing
documentation)
- [ ] Other (chores, tests, code style improvements etc.)

### Tested on

- [ ] iOS
- [ ] Android

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### Related issues

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### Checklist

- [ ] I have performed a self-review of my code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have updated the documentation accordingly
- [ ] My changes generate no new warnings

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Author: NorbertKlockiewicz

docs/src/components/ReactNativeExecuTorchFeatures/ReactNativeExecuTorchFeatureItem/styles.module.css

@@ -1,13 +1,13 @@
 .featureItem {
-  background-color: var(--swm-flame-0);
-  box-shadow: -12px 12px 0px var(--swm-flame-80);
+  background-color: var(--swm-cornflower-0);
+  box-shadow: -12px 12px 0px var(--swm-cornflower-80);
   flex: 1;
   padding: 1.5em;
 }
 
 [data-theme='dark'] .featureItem {
-  background-color: var(--swm-flame-60);
-  box-shadow: -12px 12px 0px var(--swm-flame-80);
+  background-color: var(--swm-cornflower-60);
+  box-shadow: -12px 12px 0px var(--swm-cornflower-80);
 }
 
 [data-theme='dark'] .featureTitle,

docs/src/components/ReactNativeExecuTorchFeatures/styles.module.css

@@ -24,8 +24,8 @@
 }
 
 [data-theme='dark'] .featuresButton:hover {
-  background-color: var(--swm-flame-100);
-  border-color: var(--swm-flame-100);
+  background-color: var(--swm-cornflower-100);
+  border-color: var(--swm-cornflower-100);
   color: var(--swm-off-white);
 }