add path to keywords (#877)

* add path to keywords

* add path to reserved words

Author: leto-b

src/UserGuide/Master/Tree/SQL-Manual/Keywords.md

@@ -23,6 +23,7 @@
 
 ## 1. Reserved words（Can not be used as identifier）:
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP

src/UserGuide/V1.3.x/Reference/Keywords.md

@@ -23,6 +23,7 @@
 
 Reserved words（Can not be used as identifier）:
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP

src/UserGuide/dev-1.3/Reference/Keywords.md

@@ -23,6 +23,7 @@
 
 Reserved words（Can not be used as identifier）:
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP

src/UserGuide/latest/SQL-Manual/Keywords.md

@@ -23,6 +23,7 @@
 
 ## 1. Reserved words（Can not be used as identifier）:
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP

src/zh/UserGuide/Master/Tree/SQL-Manual/Keywords.md

@@ -23,6 +23,7 @@
 
 ## 1. 保留字（不能用于作为标识符）：
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP

src/zh/UserGuide/V1.3.x/Reference/Keywords.md

@@ -23,6 +23,7 @@
 
 保留字（不能用于作为标识符）：
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP

src/zh/UserGuide/dev-1.3/Reference/Keywords.md

@@ -23,6 +23,7 @@
 
 保留字（不能用于作为标识符）：
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP

src/zh/UserGuide/latest/SQL-Manual/Keywords.md

@@ -23,6 +23,7 @@
 
 ## 1. 保留字（不能用于作为标识符）：
 
+- PATH
 - ROOT
 - TIME
 - TIMESTAMP