[doc]: Update README.md: move LGTM badges above Jenkins badges (#4658)

README.md

@@ -1,8 +1,9 @@
-*master builds*:
-
 [![Total alerts](https://img.shields.io/lgtm/alerts/g/Azure/sonic-buildimage.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Azure/sonic-buildimage/alerts/)
 [![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/Azure/sonic-buildimage.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Azure/sonic-buildimage/context:python)
 
+
+*master builds*:
+
 [![Innovium](https://sonic-jenkins.westus2.cloudapp.azure.com/job/innovium/job/buildimage-invm-all/badge/icon?subject=Innovium)](https://sonic-jenkins.westus2.cloudapp.azure.com/job/innovium/job/buildimage-invm-all)
 [![Barefoot](https://sonic-jenkins.westus2.cloudapp.azure.com/job/barefoot/job/buildimage-bf-all/badge/icon?subject=Barefoot)](https://sonic-jenkins.westus2.cloudapp.azure.com/job/barefoot/job/buildimage-bf-all)
 [![Broadcom](https://sonic-jenkins.westus2.cloudapp.azure.com/job/broadcom/job/buildimage-brcm-all/badge/icon?subject=Broadcom)](https://sonic-jenkins.westus2.cloudapp.azure.com/job/broadcom/job/buildimage-brcm-all)