Update chapters/en/unit2/cnns/convnext.mdx

Co-authored-by: Merve Noyan <[email protected]>

chapters/en/unit2/cnns/convnext.mdx

@@ -9,7 +9,7 @@ ConvNext represents a significant improvement to pure convolution models by inco
 ## Key Improvements
 The author of the ConvNeXT paper starts building the model with a regular ResNet (ResNet-50), then modernizes and improves the architecture step-by-step to imitate the hierarchical structure of Vision Transformers.
 The key improvements are:
-- Training Techniques.
+- Training techniques
 - Macro Design.
 - ResNeXt-ify.
 - Inverted Bottleneck.