Update doc/specs/stdlib_logger.md

Author: jvdp1

doc/specs/stdlib_logger.md

@@ -78,7 +78,7 @@ significant events encountered during the execution of a program.
 | Attribute        | Type          | Description                                     | Initial value |
 |------------------|---------------|-------------------------------------------------|--------------|
 | `add_blank_line` | Logical       | Flag to precede output with a blank line        | `.false.`    |
-|`buffer`          | Character(:)  | Buffer to build output string                   | Unallocated  |
+| `buffer`         | Character(:)  | Buffer to build output string                   | Unallocated  |
 | `indent_lines`   | Logical       | Flag to indent subsequent lines by four columns | `.true.`     |
 | `len_buffer`     | Integer       | Number of valid characters in buffer            | 0            |
 | `log_units`      | Integer array | List of I/O units used for output               | Unallocated  |