Update broken link to the Truth project

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=273566469

docs/bugpattern/TruthAssertExpected.md

@@ -1,4 +1,4 @@
-Arguments to a fluent [Truth](go/truth) assertion appear to be reversed based on
+Arguments to a fluent [Truth][truth] assertion appear to be reversed based on
 the argument names.
 
 ```java
@@ -22,4 +22,6 @@ follow the opposite order to JUnit assertions. Compare:
   assertEquals(expected, actual);
 ```
 
-See https://google.github.io/truth/faq#order for more details.
+See https://truth.dev/faq#order for more details.
+
+[truth]: https://truth.dev