fix: correct typo in free nvram hint string (#251)

Reviewed-on: https://gitea.angry.im/PeterCxy/OpenEUICC/pulls/251
Co-authored-by: septs <github@septs.pw>
Co-committed-by: septs <github@septs.pw>

app-common/src/main/res/values-zh-rCN/strings.xml

@@ -139,7 +139,7 @@
     <string name="euicc_info_sgp22_version">SGP.22 版本</string>
     <string name="euicc_info_sas_accreditation_number">SAS 认证号码</string>
     <string name="euicc_info_free_nvram">NVRAM 剩余空间 (eSIM 存储容量)</string>
-    <string name="euicc_info_free_nvram_hint">（仅供参考）</string>
+    <string name="euicc_info_free_nvram_hint">(仅供参考)</string>
     <string name="euicc_info_ci_type">证书签发者 (CI)</string>
     <string name="euicc_info_ci_gsma_live">GSMA 生产环境 CI</string>
     <string name="euicc_info_ci_gsma_test">GSMA 测试 CI</string>

app-common/src/main/res/values-zh-rTW/strings.xml

@@ -135,7 +135,7 @@
     <string name="euicc_info_sgp22_version">SGP.22 版本</string>
     <string name="euicc_info_sas_accreditation_number">SAS 認證號碼</string>
     <string name="euicc_info_free_nvram">NVRAM 剩餘空間 (eSIM 儲存容量)</string>
-    <string name="euicc_info_free_nvram_hint">（僅供參考）</string>
+    <string name="euicc_info_free_nvram_hint">(僅供參考)</string>
     <string name="euicc_info_ci_type">證書簽發者 (CI)</string>
     <string name="euicc_info_ci_gsma_live">GSMA 生產環境 CI</string>
     <string name="euicc_info_ci_gsma_test">GSMA 測試 CI</string>