Update tf.where documentation
Update tf.where documentation

PiperOrigin-RevId: 285095787
Change-Id: Ie3d4ce1e3bd1fbb7f10f80571261323679d1fda9

davidzchen/tensorflow,gunan/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,cxxgtxy/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_saved_model,jhseu/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-experimental_link_static_libraries_once,frreiss/tensorflow-fred,renyi533/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,annarev/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow,davidzchen/tensorflow,jhseu/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,cxxgtxy/tensorflow,petewarden/tensorflow,yongtang/tensorflow,aam-at/tensorflow,gunan/tensorflow,tensorflow/tensorflow-pywrap_saved_model,sarvex/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,yongtang/tensorflow,Intel-Corporation/tensorflow,paolodedios/tensorflow,frreiss/tensorflow-fred,jhseu/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_tf_optimizer,gautam1858/tensorflow,karllessard/tensorflow,paolodedios/tensorflow,annarev/tensorflow,petewarden/tensorflow,paolodedios/tensorflow,cxxgtxy/tensorflow,annarev/tensorflow,Intel-Corporation/tensorflow,aam-at/tensorflow,xzturn/tensorflow,xzturn/tensorflow,davidzchen/tensorflow,xzturn/tensorflow,jhseu/tensorflow,cxxgtxy/tensorflow,jhseu/tensorflow,Intel-Corporation/tensorflow,gautam1858/tensorflow,karllessard/tensorflow,Intel-Corporation/tensorflow,jhseu/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aam-at/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aldian/tensorflow,yongtang/tensorflow,gunan/tensorflow,aam-at/tensorflow,aldian/tensorflow,tensorflow/tensorflow,frreiss/tensorflow-fred,petewarden/tensorflow,frreiss/tensorflow-fred,Intel-tensorflow/tensorflow,annarev/tensorflow,xzturn/tensorflow,gautam1858/tensorflow,sarvex/tensorflow,frreiss/tensorflow-fred,aam-at/tensorflow,tensorflow/tensorflow,xzturn/tensorflow,Intel-tensorflow/tensorflow,renyi533/tensorflow,Intel-tensorflow/tensorflow,paolodedios/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,paolodedios/tensorflow,xzturn/tensorflow,yongtang/tensorflow,karllessard/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_saved_model,sarvex/tensorflow,aam-at/tensorflow,xzturn/tensorflow,Intel-tensorflow/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,gunan/tensorflow,freedomtan/tensorflow,sarvex/tensorflow,annarev/tensorflow,freedomtan/tensorflow,freedomtan/tensorflow,yongtang/tensorflow,Intel-tensorflow/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,sarvex/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow,Intel-Corporation/tensorflow,annarev/tensorflow,aam-at/tensorflow,karllessard/tensorflow,gautam1858/tensorflow,gunan/tensorflow,renyi533/tensorflow,aldian/tensorflow,aldian/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,xzturn/tensorflow,petewarden/tensorflow,gautam1858/tensorflow,petewarden/tensorflow,xzturn/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,jhseu/tensorflow,karllessard/tensorflow,gunan/tensorflow,frreiss/tensorflow-fred,frreiss/tensorflow-fred,freedomtan/tensorflow,renyi533/tensorflow,gunan/tensorflow,gunan/tensorflow,paolodedios/tensorflow,cxxgtxy/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-pywrap_saved_model,davidzchen/tensorflow,gunan/tensorflow,renyi533/tensorflow,Intel-Corporation/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,petewarden/tensorflow,renyi533/tensorflow,aam-at/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow,xzturn/tensorflow,renyi533/tensorflow,davidzchen/tensorflow,karllessard/tensorflow,gunan/tensorflow,gautam1858/tensorflow,renyi533/tensorflow,annarev/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aam-at/tensorflow,paolodedios/tensorflow,gunan/tensorflow,freedomtan/tensorflow,annarev/tensorflow,gautam1858/tensorflow,Intel-tensorflow/tensorflow,aldian/tensorflow,paolodedios/tensorflow,freedomtan/tensorflow,gautam1858/tensorflow,karllessard/tensorflow,tensorflow/tensorflow,petewarden/tensorflow,davidzchen/tensorflow,freedomtan/tensorflow,jhseu/tensorflow,jhseu/tensorflow,yongtang/tensorflow,karllessard/tensorflow,davidzchen/tensorflow,cxxgtxy/tensorflow,tensorflow/tensorflow,freedomtan/tensorflow,yongtang/tensorflow,petewarden/tensorflow,freedomtan/tensorflow,petewarden/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,aam-at/tensorflow,renyi533/tensorflow,renyi533/tensorflow,tensorflow/tensorflow-pywrap_saved_model,gunan/tensorflow,tensorflow/tensorflow,annarev/tensorflow,jhseu/tensorflow,jhseu/tensorflow,xzturn/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_mod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