docs: Fix typo in Arrays and better document 1D arrays only (#1939)

Signed-off-by: Sparsh-N <[email protected]>

Author: Sparsh-N

src/doc/datatypes.md

@@ -558,6 +558,8 @@ are 1D and statically sized, using the usual syntax for C-like languages:
     float c[3] = { 0.1, 0.2, 3.14 };   // Initialize the array
 
     float f = c[1];                    // Access one element
+
+    float d[10][3];                    // Invalid, multi-dimensional arrays not supported
 ```
 
 The built-in function `arraylength()` returns the number of elements in an

src/doc/syntax.md

@@ -88,9 +88,9 @@ Some examples of variable declarations are
 
 Arrays are also supported, declared as follows:
 
-> *type variablename* `[` *arraylen* `}`
+> *type variablename* `[` *arraylen* `]`
 >
-> *type variablename* `[` *arraylen* `}` `=` `{` *init0 `,` *init1* ... `}`
+> *type variablename* `[` *arraylen* `]` `=` `{` *init0 `,` *init1* ... `}`
 
 Array variables in OSL must have a constant length (though function parameters
 and shader parameters may have undetermined length).  Some examples of array