doc/rust.md: broken references

2213: dangling link: binary-move-expressions
2216: dangling link: unary-move-expressions
2217: dangling link: swap-expressions
2230: dangling link: move-expressions
2232: dangling link: owning-pointers
3113: dangling link: struct-expressions
3119: dangling link: visibility-modifiers
3125: dangling link: structure-expression
3796: dangling link: log-expressions
