Update doc/specs/stdlib_logger.md

Co-authored-by: Jeremie Vandenplas <jeremie.vandenplas@gmail.com>

Author: milancurcic

doc/specs/stdlib_logger.md

@@ -754,31 +754,30 @@ Subroutine
 #### Example
 
 ```fortran
-    program example
-        use stdlib_logger
-        ...
-        character(*), parameter :: filename = 'dummy.txt'
-        integer                 :: col_no, line_no, lun
-        character(128)          :: line
-        character(*), parameter :: message = 'Bad text found.'
-
-        open( newunit=lun, file = filename, statu='old', &
+program demo_log_text_error
+    use stdlib_logger
+    
+    character(*), parameter :: filename = 'dummy.txt'
+    integer                 :: col_no, line_no, lun
+    character(128)          :: line
+    character(*), parameter :: message = 'Bad text found.'
+
+    open( newunit=lun, file = filename, statu='old', &
 		    form='formatted' )
-        line_no = 0
-        do
-            read( lun, fmt='(a)', end=900 ) line
-            line_no = line_no + 1
-            call check_line( line, status, col_no )
-            if ( status /= 0 )
-              call global_logger % log_text_error( line, &
+    line_no = 0
+    do
+        read( lun, fmt='(a)', end=900 ) line
+        line_no = line_no + 1
+        call check_line( line, status, col_no )
+        if ( status /= 0 )
+            call global_logger % log_text_error( line, &
                   col_no, message, filename, line_no )
-              error stop 'Error in reading ' // filename
-            end if
-            ...
-        end do
+            error stop 'Error in reading ' // filename
+        end if
+    end do
     900 continue
-        ...
-    end program example
+   
+end program demo_log_text_error
 ```
 
 ### `log_units_assigned` - returns the number of active I/O units