correction

Author: venom1204

vignettes/datatable-joins.Rmd

@@ -573,12 +573,12 @@ ProductReceivedProd2[ProductSalesProd2,
 
 When performing non-equi joins (<, >, <=, >=), it's important to understand how column names are assigned in the result.
 
-- The left operand (x column) determines the column name in the result.
-- The right operand (i column) contributes values but does not retain its original name.
-- By default, data.table does not retain the i column used in the join condition unless explicitly requested.
+- The left operand (`x` column) determines the column name in the result.
+- The right operand (`i` column) contributes values but does not retain its original name.
+- By default, `data.table` does not retain the `i` column used in the join condition unless explicitly requested.
 
-In non-equi joins, the left side of the operator (e.g., A in A >= B) must be a column from x,  
-and the right side (e.g., B) must be a column from i.  Non-equi join does not support  arbitrary expressions. For example, on = .(x_col >= i_col) is valid, but on = .(x_col >= i_col + 1) is not.  
+In non-equi joins, the left side of the operator (e.g., `A` in `A >= B`) must be a column from `x`,  
+and the right side (e.g., `B`) must be a column from `i`.  Non-equi join does not support  arbitrary expressions. For example, `on = .(x_col >= i_col)` is valid, but `on = .(x_col >= i_col + 1)` is not.  
 
 Arbitrary comparisons can be accomplished by create temporary columns first. For example:
 
@@ -590,7 +590,7 @@ x[i, on = .(A >= B)]
 In data.table, when using a non-equi join condition (>=, <, etc.), the column from x is retained in the result, while the column from i is not retained unless explicitly selected.
 
 Expected Output
-    A    value_x  value_i
+   A    value_x  value_i
 1: 2       b       A
 2: 4       d       B
 3: 5       e       C