Fix typo

Merges https://github.com/espressif/esp-idf/pull/4752

docs/en/api-reference/system/efuse.rst

@@ -5,7 +5,7 @@ eFuse Manager
 Introduction
 ------------
 
-The eFuse Manager library is designed to structure access to eFuse bits and make using these easy. This library operates eFuse bits by a structure name wich assigned in eFuse table. This sections introduces some concepts used by eFuse Manager.
+The eFuse Manager library is designed to structure access to eFuse bits and make using these easy. This library operates eFuse bits by a structure name which is assigned in eFuse table. This sections introduces some concepts used by eFuse Manager.
 
 
 Hardware description