Apply suggestions from code review

Co-authored-by: Johel Ernesto Guerrero Peña <johelegp@gmail.com>

Author: jensmaurer

source/declarations.tex

@@ -3593,7 +3593,7 @@
 a function parameter pack\iref{temp.variadic}.
 An \defnadj{explicit object}{member function} is a non-static member function
 with an explicit object parameter.
-An \defnadj{implicit object}{member function} is non-static member function
+An \defnadj{implicit object}{member function} is a non-static member function
 without an explicit object parameter.
 
 \pnum

source/expressions.tex

@@ -1799,7 +1799,7 @@
 auto q = p(1, 'a', 3.14);                                       // OK: outputs \tcode{1a3.14}
 q();                                                            // OK: outputs \tcode{1a3.14}
 
-auto fact = [](this auto self, int n) -> int {                  // OK: explicit ject parameter
+auto fact = [](this auto self, int n) -> int {                  // OK: explicit object parameter
   return (n <= 1) ? 1 : n * self(n-1);
 };
 std::cout << fact(5);                                           // OK: outputs 120