travis: let yaml know these strings are strings

carlosmn · carlosmn · commit 1381380f3450 · 2018-03-26T12:58:53.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,7 +4,7 @@ go:
   - 1.7
   - 1.8
   - 1.9
-  - 1.10
+  - "1.10"
   - tip
 
 script: make test-static

-Original file line number
+Diff line change
   - 1.7
   - 1.8
   - 1.9
 -  - 1.10
 +  - "1.10"
   - tip
 script: make test-static