certstore: rename argument in constructor

Change-Id: I3f0ff94a42083f89f188c9ff3da5b1e447ee3c2b

include/certstore.h

@@ -49,7 +49,7 @@ const char* statusToStr(TrustStatus s);
 class CertificateStore
 {
 public:
-    explicit CertificateStore(const std::string& accountId, std::shared_ptr<Logger> logger);
+    explicit CertificateStore(const std::string& path, std::shared_ptr<Logger> logger);
 
     std::vector<std::string> getPinnedCertificates() const;
     /**