Update README.md

Author: jecisc

README.md

@@ -27,7 +27,7 @@ If you want to add a dependency on this project to your project, include the fol
 
 ```Smalltalk
 spec
-  baseline: 'AIDataImputerss'
+  baseline: 'AIDataImputers'
   with: [ spec repository: 'github://pharo-ai/data-imputers/src' ].
 ```
 
@@ -108,4 +108,4 @@ AISimpleImputer new
 	useMostFrequent;
 	missingValue: false;
 	fitAndTransform: #( #( 7 2 5 6 ) #( 7 false 5 9 ) #( 10 2 false 6 ) ) "#( #( 7 2 5 6 ) #( 7 2 5 9 ) #( 10 2 5 6 ) )"
-```
+```