Corrected typo in disqus_comments.json file.

Author: Konstantinacc

data/disqus_comments.json

@@ -1,5 +1,5 @@
 {
-    "library": "This library and its examples where tested on TEST_DATE with common Arduino boards. For more detailed information about the test results, please look at each example's comments.",
+    "library": "This library and its examples were tested on TEST_DATE with common Arduino boards. For more detailed information about the test results, please look at each example's comments.",
     "example_success": "This example was tested on TEST_DATE and it compiles on BOARDS_LIST.",
     "example_fail": "This example was tested on TEST_DATE and it failed to compile on common Arduino boards.",
     "example_unsupported": "This example is not known to compile with any of the codebender supported boards at least until TEST_DATE."