fix typo (#21)

Author: bart1

README.md

@@ -14,7 +14,7 @@ status](https://www.r-pkg.org/badges/version/torchvisionlib)](https://CRAN.R-pro
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-The goal of torchvisionlib is to provide access to C++ opeartions
+The goal of torchvisionlib is to provide access to C++ operations
 implemented in [torchvision](https://github.com/pytorch/vision). It
 provides plain R acesss to some of those C++ operations but, most
 importantly it provides full support for JIT operators defined in