Fix link to Infer workflow from Hello, World! (#1347)

Summary:
Update of the link _Infer worfklow_ in https://fbinfer.com/docs/hello-world/#differential-analysis to a correct link.

Verified on locally started website.

Signed-off-by: Petr Plavjanik <plavjanik@gmail.com>

Pull Request resolved: https://github.com/facebook/infer/pull/1347

Reviewed By: da319

Differential Revision: D25638010

Pulled By: jvillard

fbshipit-source-id: 0e7fcb090

website/docs/00-hello-world.md

@@ -247,7 +247,7 @@ everything. Note that only the modified files, and those dependent on them, are
 re-analyzed. This analysis mode can be significantly faster.
 
 You can learn more about the particulars of each solution in the
-[Infer workflow](docs/infer-workflow.html) page.
+[Infer workflow](infer-workflow) page.
 
 ## Hello world iOS
 

website/versioned_docs/version-0.17.0/00-hello-world.md

@@ -247,7 +247,7 @@ everything. Note that only the modified files, and those dependent on them, are
 re-analyzed. This analysis mode can be significantly faster.
 
 You can learn more about the particulars of each solution in the
-[Infer workflow](docs/infer-workflow.html) page.
+[Infer workflow](infer-workflow) page.
 
 ## Hello world iOS
 

website/versioned_docs/version-1.0.0/00-hello-world.md

@@ -247,7 +247,7 @@ everything. Note that only the modified files, and those dependent on them, are
 re-analyzed. This analysis mode can be significantly faster.
 
 You can learn more about the particulars of each solution in the
-[Infer workflow](docs/infer-workflow.html) page.
+[Infer workflow](infer-workflow) page.
 
 ## Hello world iOS