.gitconfig: improve git p alias (mathiasbynens#896)

Fix a bug introduced in mathiasbynens#868, originally proposed in mathiasbynens#826.

.gitconfig

@@ -15,7 +15,7 @@
 	di = !"d() { git diff --patch-with-stat HEAD~$1; }; git diff-index --quiet HEAD -- || clear; d"
 
 	# Pull in remote changes for the current repository and all its submodules
-	p = git pull --recurse-submodules
+	p = pull --recurse-submodules
 
 	# Clone a repository including all submodules
 	c = clone --recursive