Fix many broken links

Note that contrary to what docgen.rst currently says, the ids have
to match exactly or else most web browsers will not jump to the
intended symbol.

doc/manual.rst

@@ -1482,7 +1482,7 @@ order. The *names* of the fields also have to be identical.
 
 The assignment operator for tuples copies each component.
 The default assignment operator for objects copies each component. Overloading
-of the assignment operator is described in `type-bound-operations-operator`_.
+of the assignment operator is described `here <manual_experimental.html#type-bound-operations>`_.
 
 .. code-block:: nim
 
@@ -2132,7 +2132,7 @@ conversions from ``string`` to ``SQL`` are allowed:
 Now we have compile-time checking against SQL injection attacks.  Since
 ``"".SQL`` is transformed to ``SQL("")`` no new syntax is needed for nice
 looking ``SQL`` string literals. The hypothetical ``SQL`` type actually
-exists in the library as the `TSqlQuery type <db_sqlite.html#TSqlQuery>`_ of
+exists in the library as the `SqlQuery type <db_common.html#SqlQuery>`_ of
 modules like `db_sqlite <db_sqlite.html>`_.
 
 
@@ -3484,7 +3484,7 @@ more argument in this case:
   assert x == y
 
 The command invocation syntax also can't have complex expressions as arguments.
-For example: (`anonymous procs`_), ``if``, ``case`` or ``try``.
+For example: (`anonymous procs <#procedures-anonymous-procs>`_), ``if``, ``case`` or ``try``.
 Function calls with no arguments still needs () to
 distinguish between a call and the function itself as a first class value.
 
@@ -3505,7 +3505,7 @@ Creating closures in loops
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Since closures capture local variables by reference it is often not wanted
-behavior inside loop bodies. See `closureScope <system.html#closureScope>`_
+behavior inside loop bodies. See `closureScope <system.html#closureScope.t,untyped>`_
 for details on how to change this behavior.
 
 Anonymous Procs
@@ -5895,7 +5895,7 @@ or ``ref T`` or ``ptr T`` this means no locations are modified. It is a static
 error to mark a proc/iterator to have no side effect if the compiler cannot
 verify this.
 
-As a special semantic rule, the built-in `debugEcho <system.html#debugEcho>`_
+As a special semantic rule, the built-in `debugEcho <system.html#debugEcho,varargs[typed,]>`_
 pretends to be free of side effects, so that it can be used for debugging
 routines marked as ``noSideEffect``.
 
@@ -6168,7 +6168,8 @@ factor.
 immediate pragma
 ----------------
 
-The immediate pragma is obsolete. See `Typed vs untyped parameters`_.
+The immediate pragma is obsolete. See `Typed vs untyped parameters
+<#templates-typed-vs-untyped-parameters>`_.
 
 
 compilation option pragmas
@@ -7032,7 +7033,7 @@ is not set to C, other pragmas are available:
 
  * `importcpp <manual.html#implementation-specific-pragmas-importcpp-pragma>`_
  * `importobjc <manual.html#implementation-specific-pragmas-importobjc-pragma>`_
- * `importjs <manul.html#implementation-specific-pragmas-importjs-pragma>`_
+ * `importjs <manual.html#implementation-specific-pragmas-importjs-pragma>`_
 
 .. code-block:: Nim
   proc p(s: cstring) {.importc: "prefix$1".}