Linalg qr (#1255)
Linalg qr (#1255)

DOC: Moves qr and gramSchmidt to under linalg namespace in the documentation (logically there already)
DOC: Adds code snips to both.
DOC: linalg namespace update.



tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs-core,tensorflow/tfjs,tensorflow/tfjs-core,tensorflow/tfjs,tensorflow/tfjs-core,tensorflow/tfjs-core,tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs-core,tensorflow/tfjs-core,tensorflow/tfjs