[llvm] [llvm][utils] Correct release package links for Windows (PR #215770)

[Cullen Rhodes via llvm-commits]

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@@ -144,11 +148,24 @@ def generate_download_links(release):
     )
     markdown_lines = []
 
+    # Windows installers use Wix which does not support version strings with
+    # characters. To work around this, "X.1.0-rcZ" is changed to "X.0.0.Z".
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c-rhodes wrote:

I know this follows #215030 but I missed this during review, why is it `X.0.0.Z` and not `X.1.0.Z`? @tstellar 

https://github.com/llvm/llvm-project/pull/215770