fix links

Author: avehtari

src/reference-manual/blocks.qmd

@@ -394,7 +394,7 @@ in the `transformed data` block.
 The statements in the transformed data block are designed to be
 executed once and have a deterministic result.  Therefore, log
 probability is not accumulated and 
-[statements.qmd#distribution-statements.section](distribution statements)
+[distribution statements](statements.qmd#distribution-statements.section)
 may not be used.
 
 

src/reference-manual/statements.qmd

@@ -369,7 +369,7 @@ the function `target()` may be used.
 ## Sampling statements {#sampling-statements.section}
 
 The term "sampling statement" has been replaced with 
-[#distribution-statements.section](distribution statement).
+[distribution statement](#distribution-statements.section).
 
 ## Distribution statements {#distribution-statements.section}
 
@@ -514,7 +514,7 @@ the exact log probability values for the model.  Otherwise, the
 distribution statement form will be faster if any of the input expressions,
 `y`, `mu`, or `sigma`, involve only constants, data
 variables, and transformed data variables. See the section
-[#built-in-distributions](Built in distributions) above discussing
+[Built in distributions](#built-in-distributions) above discussing
 `_lupdf` and `_lupmf` functions that also drops all the constant terms.