Rename RESOURCE.md to SOURCE.md

Author: sepehr-rs

RESOURCE.md SOURCE.mdRESOURCE.md renamed to SOURCE.md

@@ -539,4 +539,4 @@
 | whatsnew/3.9.po | 0.0% | 0.0% |
 | whatsnew/changelog.po | 0.0% | 0.0% |
 | whatsnew/index.po | 0.0% | 0.0% |
-<!-- TRANSLATION_STATUS_END -->
+<!-- TRANSLATION_STATUS_END -->