Merge pull request #2012 from agkhall/patch-1

Minor clarification

book/07-git-tools/sections/submodules.asc

@@ -166,7 +166,7 @@ $
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 The `DbConnector` directory is there, but empty.
-You must run two commands: `git submodule init` to initialize your local configuration file, and `git submodule update` to fetch all the data from that project and check out the appropriate commit listed in your superproject:
+You must run two commands from the main project: `git submodule init` to initialize your local configuration file, and `git submodule update` to fetch all the data from that project and check out the appropriate commit listed in your superproject:
 
 [source,console]
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