Make minor formatting change to a manual table.

Author: paciorek

UserManual/src/tables/coreRtableLong.md

@@ -6,13 +6,14 @@ Table: (#tab:coreR) Basic R manipulation functions in NIMBLE. For some of these
   `rep()`         No `rep.int` or `rep_len` arguments.
   `seq()` and ':' Negative integer sequences from ‘:’, e.g. , `2:1` do not work.
   `which()`       No `arr.ind` or `useNames` arguments.
-  `diag()`        Works like R in three ways: `diag(vector)` returns a matrix with `vector` on the diagonal; 
+  `diag()`        Works like R in three ways: 
+                  `diag(vector)` returns a matrix with `vector` on the diagonal; 
                   `diag(matrix)` returns the diagonal vector of `matrix`; 
                   `diag(n)` returns an $n \times n$ identity matrix. No `nrow` or `ncol` arguments.
   `diag()<-`      Works for assigning the diagonal vector of a matrix.
   `dim()`         Works on a vector as well as higher-dimensional arguments.
   `length()`
-  `is.na()`       Does not correctly handle NAs (or NaNs) from R that are type `'logical'` or `'integer'`, 
+  `is.na()`       Does not correctly handle NAs (or NaNs) from R that are type `'logical'` or `'integer'`,
                   so convert these using `as.numeric()` before passing from R to NIMBLE.
   `is.nan()`      
   `any()`         One argument only; NAs treated as FALSE.
@@ -23,7 +24,7 @@ Table: (#tab:coreR) Basic R manipulation functions in NIMBLE. For some of these
   `matrix()`      Allows additional arguments to control initialization.
   `array()`       Allows additional arguments to control initialization.
   indexing        Arbitrary integer and logical indexing is supported for objects of one or two dimensions. 
-                  For higher-dimensional objects, only `:` indexing works and then only to create an object
-                  of at most two dimensions.
+                  For higher-dimensional objects, only `:` indexing works, and 
+                  then only to create an object of at most two dimensions.