minor documentation fixes

doc/source/reference/language/expressions.rst

@@ -243,7 +243,7 @@ Operators precedence
 +---------------------------------------+-----------+
 | ``<<, >>, >>>``                       |           |
 +---------------------------------------+-----------+
-| ``<, <=, >, >=``                      |           |
+| ``<, <=, >, >=, instanceof``          |           |
 +---------------------------------------+-----------+
 | ``==, !=, <=>``                       |           |
 +---------------------------------------+-----------+
@@ -253,7 +253,7 @@ Operators precedence
 +---------------------------------------+-----------+
 | ``&&, in``                            |           |
 +---------------------------------------+-----------+
-| ``+=, =, -=``                         | ...       |
+| ``+=, =, -=, /=, *=, %=``             | ...       |
 +---------------------------------------+-----------+
 | ``, (comma operator)``                | lowest    |
 +---------------------------------------+-----------+

doc/source/stdlib/stdstringlib.rst

@@ -158,9 +158,9 @@ The regexp class
 +---------------------+--------------------------------------+
 |      `\\C`          |  non control characters              |
 +---------------------+--------------------------------------+
-|      `\\p`          |  punctuation                          |
+|      `\\p`          |  punctuation                         |
 +---------------------+--------------------------------------+
-|      `\\P`          |  non punctuation                      |
+|      `\\P`          |  non punctuation                     |
 +---------------------+--------------------------------------+
 |      `\\b`          |  word boundary                       |
 +---------------------+--------------------------------------+