Fix links and sentence structure

Author: matthewjasper

src/destructors.md

@@ -273,7 +273,8 @@ scope of the initializer expression is extended.
 
 #### Extending based on expressions
 
-For a let statement with an initializer, an *extending expression* if it is
+For a let statement with an initializer, an *extending expression* is an
+expression which is one of the following:
 
 * The initializer expression.
 * The operand of a extending [borrow expression].
@@ -337,6 +338,7 @@ variable or field from being dropped automatically.
 [initialized]: glossary.html#initialized
 [interior mutability]: interior-mutability.html
 [lazy boolean expression]: expressions/operator-expr.html#lazy-boolean-operators
+[place context]: expressions.html#place-expressions-and-value-expressions
 [statement]: statements.html
 [temporary]: expressions.html#temporary-lifetimes
 [variable]: variables.html

src/expressions.md

@@ -154,9 +154,8 @@ The following expressions can be mutable place expression contexts:
 
 When using a value expression in most place expression contexts, a temporary
 unnamed memory location is created initialized to that value and the expression
-evaluates to that location instead, except if [promoted](#constant-promotion)
-to a `static`. The [drop scope] of the temporary is usually the end of the
-enclosing statement.
+evaluates to that location instead, except if [promoted] to a `static`. The
+[drop scope] of the temporary is usually the end of the enclosing statement.
 
 ### Implicit Borrows
 
@@ -249,6 +248,7 @@ They are never allowed before:
 [interior mutability]:  interior-mutability.html
 [let statement]:        statements.html#let-statements
 [Mutable `static` items]: items/static-items.html#mutable-statics
+[promoted]:             destructors.html#constant-promotion
 [slice]:                types/slice.html
 [statement]:            statements.html
 [static variables]:     items/static-items.html