Fix typo in README file. (#856)

README.md

@@ -179,27 +179,27 @@ When you are ready:
 Releases
 --------
 
-The module, theme and layout releases on Backdropcms.org rely on GitHub 
-releases. Before creating a GitHub release, you must first add git tag. 
-The format for the tag should be "1.x-1.0.0". "1.x-1.0.0-alpha1" or 
-"1.x-1.0.0--beta1" can also be used to indicate a project is not yet 
+The module, theme and layout releases on Backdropcms.org rely on GitHub
+releases. Before creating a GitHub release, you must first add git tag.
+The format for the tag should be "1.x-1.0.0". "1.x-1.0.0-alpha1" or
+"1.x-1.0.0-beta1" can also be used to indicate a project is not yet
 stable and should be used with caution.
 
 The most common order of operations is as follows:
-  1. Add a tag using `git tag 1.x-1.0.0` 
+  1. Add a tag using `git tag 1.x-1.0.0`
   1. Push the tag up to the contrib repository.
-  1. Visit the page for the tag in GitHub and 
+  1. Visit the page for the tag in GitHub and
 [create a release from that page](https://docs.github.com/en/repositories/releasing-projects-on-github/managing-releases-in-a-repository).
   1. Wait. This process can take anywhere 5 seconds to 5 minutes.
   1. Refresh the GitHub release page. You should see a "Download XYZ" link appear.
 
 If successful, your project should appear on
 the [modules](https://backdropcms.org/modules),
-[themes](https://backdropcms.org/themes) or [layouts](https://backdropcms.org/layouts) 
+[themes](https://backdropcms.org/themes) or [layouts](https://backdropcms.org/layouts)
 listing pages on BackdropCMS.org.
 
 If there was an error during the packaging process, an error message from the
-packager will be attached instead. 
+packager will be attached instead.
 
 
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