Fix typo in cli --help

Author: mdaeron

src/D47crunch/__init__.py

@@ -3372,7 +3372,7 @@ def _cli(
 	See [b]https://mdaeron.github.io/D47crunch/#3-command-line-interface-cli[/b] for more details.
 	
 	Reads raw data from an input file, optionally excluding some samples and/or analyses, thean standardizes
-	the data based either on the default [b]d13C_VDPB[/b], [b]d18O_VPDB[/b], [b]D47[/b], and [b]D48[/b] anchors or on different
+	the data based either on the default [b]d13C_VPDB[/b], [b]d18O_VPDB[/b], [b]D47[/b], and [b]D48[/b] anchors or on different
 	user-specified anchors. A new directory (named `output` by default) is created to store the results and
 	the following sequence is applied: