Replace storage example targets from K64F to K82F

Suggested here: #8246 (comment)

Author: Cruz Monrreal

tools/test/examples/examples.json

@@ -238,7 +238,7 @@
         ],
         "test-repo-source": "github",
         "features" : [],
-        "targets" : ["K64F"],
+        "targets" : ["K82F"],
         "toolchains" : [],
         "exporters": [],
         "compile" : true,
@@ -251,7 +251,7 @@
         "mbed": [],
         "test-repo-source": "github",
         "features" : [],
-        "targets" : ["K64F"],
+        "targets" : ["K82F"],
         "toolchains" : [],
         "exporters": [],
         "compile" : true,