Travis CI: Fix fold syntax

.travis.yml

@@ -25,12 +25,12 @@ script:
   - echo 'Running Tests..' && echo -en 'travis_fold:start:script.1\\r'
   - make tests
   - echo -en 'travis_fold:end:script.1\\r'
-  - echo 'Building NuttX..' && echo -en 'travis_fold:start:script.1\\r'
+  - echo 'Building NuttX..' && echo -en 'travis_fold:start:script.2\\r'
   - make archives
-  - echo -en 'travis_fold:end:script.1\\r'
-  - echo 'Building Firmware..' && echo -en 'travis_fold:start:script.1\\r'
+  - echo -en 'travis_fold:end:script.2\\r'
+  - echo 'Building Firmware..' && echo -en 'travis_fold:start:script.3\\r'
   - make -j6
-  - echo -en 'travis_fold:end:script.1\\r'
+  - echo -en 'travis_fold:end:script.3\\r'
   - zip Firmware.zip Images/*.px4
 
 deploy: