Fix docstring formatting: backticks and spacing

Author: Kheil-Z

monai/networks/blocks/warp.py

@@ -53,9 +53,9 @@ def __init__(self, mode=GridSampleMode.BILINEAR.value, padding_mode=GridSamplePa
             Reference: B. Likar and F. Pernus. A heirarchical approach to elastic registration
             based on mutual information. Image and Vision Computing, 19:33-44, 2001.
 
-        Note that using mode= ``"nearest"`` makes the warping operation effectively non-differentiable:
+        Note that using ``mode="nearest"`` makes the warping operation effectively non-differentiable:
         gradients are zero almost everywhere, which can block gradient flow during training.
-        For learning-based registration, use "bilinear" (2D) or "trilinear" (3D) interpolation instead.
+        For learning-based registration, use ``"bilinear"`` (2D) or ``"trilinear"`` (3D) interpolation instead.
 
         See https://github.com/Project-MONAI/tutorials/blob/main/3d_registration/learn2reg_oasis_unpaired_brain_mr.ipynb
         for examples of semi-supervised registration using segmentations.