Re-order example descriptions

Given the way that the two descriptions were written it was confusing about which example was being discussed (see specifically "In the above example in the previous version).

README.md

@@ -125,7 +125,7 @@ If not provided, `artifact` will be used as the default name which will manifest
 
 ### Uploading to the same artifact
 
-Each artifact behaves as a file share. Uploading to the same artifact multiple times in the same workflow can overwrite and append already uploaded files
+With the following example, the available artifact (named `artifact` by default if no name is provided) would contain both `world.txt` (`hello`) and `extra-file.txt` (`howdy`).
 
 ```yaml
 - run: echo hi > world.txt
@@ -143,10 +143,11 @@ Each artifact behaves as a file share. Uploading to the same artifact multiple t
   with:
     path: world.txt
 ```
-With the following example, the available artifact (named `artifact` which is the default if no name is provided) would contain both `world.txt` (`hello`) and `extra-file.txt` (`howdy`).
 
 > **_Warning:_**  Be careful when uploading to the same artifact via multiple jobs as artifacts may become corrupted 
 
+Each artifact behaves as a file share. Uploading to the same artifact multiple times in the same workflow can overwrite and append already uploaded files
+
 ```yaml
     strategy:
       matrix: