Fix US_RDQU keycode (#13464)

`US_RDQU` and `US_LDQU` were aliased to the same keycode. `US_RDQU`
should use the right bracket.

quantum/keymap_extras/keymap_us_extended.h

@@ -214,7 +214,7 @@
 #define US_DIV  S(ALGR(US_EQL))  // ÷
 // Row 2
 #define US_LDQU S(ALGR(US_LBRC)) // “
-#define US_RDQU S(ALGR(US_LBRC)) // ”
+#define US_RDQU S(ALGR(US_RBRC)) // ”
 #define US_BRKP S(ALGR(US_BSLS)) // ¦
 // Row 3
 #define US_SECT S(ALGR(US_S))    // §

quantum/keymap_extras/keymap_us_international_linux.h

@@ -212,7 +212,7 @@
 #define US_DIV  S(ALGR(US_EQL))  // ÷
 // Row 2
 #define US_LDQU S(ALGR(US_LBRC)) // “
-#define US_RDQU S(ALGR(US_LBRC)) // ”
+#define US_RDQU S(ALGR(US_RBRC)) // ”
 #define US_BRKP S(ALGR(US_BSLS)) // ¦
 // Row 3
 #define US_SECT S(ALGR(US_S))    // §